CBSE Class 7 Mathematics Simple Equations Worksheet Set A

Question. 3b + 9 = -18
Answer : b = -9

Question. 3v + 1 = 22
Answer : v = 7

Question. 3y-2 = 10
Answer : y = 4

Question. 2z + 1 = 15
Answer : z = 7

Question. -2b-(-7) = 11
Answer : b = -2

Question. 3c-9 = -27
Answer : c = -6

Question. -3c-4 = 2
Answer : c = -2

Question. -3c + 8 = -10
Answer : c = 6

Question. 2c-8 = -18
Answer : c = -5

Question. 3a-5 = -23
Answer : a = -6

Question. -2a-8 = -4
Answer : a = -2

Question. 3z-2 = -26
Answer : z = -8

Question. 2u + 7 = 5
Answer : u = -1

Question. 3a-(-1) = -5
Answer : a = -2

Question. -2u + (-1) = -13
Answer : u = 6

Question. 2b + (-7) = -21
Answer : b = -7

Question. -3y + 4 = 31
Answer : y = -9

Question. -2a + 2 = -18
Answer : a = 10

Question. -2y-6 = 6
Answer : y = -6

Question. -2c + 7 = 27
Answer : c = -10

Question. 2b-4 = -18
Answer : b = -7

Question. -2a-(-9) = 23
Answer : a = -7

Question. -3a + 1 = 1
Answer : a = 0

Question. 2v-9 = 5
Answer : v = 7

Question. 3z-(-10) = 1
Answer : z = -3

Question. 2x + 8 = 4
Answer : x = -2

Question. -3v + (-4) = 11
Answer : v = -5

Question. 2v-10 = 0
Answer : v = 5

Question. 3u + 9 = 15
Answer : u = 2

Question. -2c-7 = -5
Answer : c = -1

Question. -3u + (-6) = 21
Answer : u = -9

Question. 3c + (-2) = -20
Answer : c = -6

Question. 2c-8 = -18
Answer : c = -5

Question. -3x-(-5) = 32
Answer : x = -9

Question. 2x-4 = -18
Answer : x = -7

Question. 2c-(-7) = 13
Answer : c = 3

Question. 2v-(-3) = 13
Answer : v = 5

Question. 2v-(-8) = 20
Answer : v = 6

Question. -3u-2 = 13
Answer : u = -5

Question. -3y + 2 = 26
Answer : y = -8

Question. -2u-2 = 14
Answer : u = -8

Question. -3y + (-6) = -27
Answer : y = 7

Question. 2y-9 = -19
Answer : y = -5

Question. -2z-1 = 9
Answer : z = -5

Question. -3z + 1 = -26
Answer : z = 9

Question. -2c + 1 = 15
Answer : c = -7

Question. 3c-9 = -15
Answer : c = -2

Question. 3a-(-4) = 7
Answer : a = 1

Question. -2u + 8 = 4
Answer : u = 2

Question. 3x-(-7) = 25
Answer : x = 6

Question. 2z + 10 = 6
Answer : z = -2

Question. 2a-(-8) = 18
Answer : a = 5

Question. 3c-3 = 27
Answer : c = 10

Question. -2a-3 = -15
Answer : a = 6

Question. -3c + (-7) = 17
Answer : c = -8

Question. -3c-4 = -7
Answer : c = 1

Question. -2v + 9 = 27
Answer : v = -9

Question. 2a-5 = -3
Answer : a = 1

Question. 3b + (-7) = 14
Answer : b = 7

Question. 2a + 1 = 3
Answer : a = 1

Question. -3z + (-8) = 1
Answer : z = -3

Question. 2v-7 = 11
Answer : v = 9

Question. -3a-(-3) = -3
Answer : a = 2

Question. 2y-7 = -1
Answer : y = 3

Question. -2y-(-9) = 9
Answer : y = 0

Question. 2v-10 = -2
Answer : v = 4

Question. 2u + (-8) = -24
Answer : u = -8

Question. 2c + 7 = 13
Answer : c = 3

Question. 3z + 8 = -7
Answer : z = -5

Question. 2x-(-4) = 0
Answer : x = -2

Question. -2a-(-4) = 10
Answer : a = -3

Question. -3u-4 = -19
Answer : u = 5

Question. 3u-(-10) = -2
Answer : u = -4

Question. -2u + 1 = 7
Answer : u = -3

Question. 2a + 9 = 11
Answer : a = 1

Question. -2v + 4 = 24
Answer : v = -10

Question. 3c + 1 = -26
Answer : c = -9

Question. 2y + 6 = 16
Answer : y = 5

Question. -2v + 9 = 3
Answer : v = 3

Question. -3a + 1 = -26
Answer : a = 9

Question. 3a + 5 = 35
Answer : a = 10

Question. 2u-(-4) = 2
Answer : u = -1

Question. -3x-6 = -30
Answer : x = 8

Question. -2a + 8 = 26
Answer : a = -9

Question. -2x-(-7) = 5
Answer : x = 1

Question. 3z-(-3) = -21
Answer : z = -8

Question. 2x-5 = -19
Answer : x = -7

Question. 2y-(-5) = 11
Answer : y = 3

Question. -3b-7 = -7
Answer : b = 0

Question. 2v + 1 = -1
Answer : v = -1

Question. 2c + 10 = -10
Answer : c = -10

Question. -2u-1 = 9
Answer : u = -5

Question. -3b + 2 = -1
Answer : b = 1

Question. 3b + (-7) = 14
Answer : b = 7

Question. 3z-9 = -15
Answer : z = -2

Question. -2z-8 = -6
Answer : z = -1

Question. 3z-(-5) = -10
Answer : z = -5

Question. -3z + (-8) = 13
Answer : z = -7

Question. -2x-(-3) = 17
Answer : x = -7

Question. 2z-(-10) = 8
Answer : z = -1

Question. 3y-4 = -19
Answer : y = -5

Question. 2a + (-8) = -2
Answer : a = 3

Question. 3a + 6 = 24
Answer : a = 6

Question. 2v + 7 = 19
Answer : v = 6

Question. -3a + 3 = -21
Answer : a = 8

Question. 2c-3 = -15
Answer : c = -6

Question. -3z + 2 = 5
Answer : z = -1

Question. -2v-7 = -23
Answer : v = 8

Question. 2x + 3 = 1
Answer : x = -1

Question. 3b + (-9) = -24
Answer : b = -5

Question. 2v + (-3) = 7
Answer : v = 5

Question. 2c + (-10) = -6
Answer : c = 2

Question. 2v-(-8) = 18
Answer : v = 5

Question. 3x + (-4) = -1
Answer : x = 1

Question. 2z + 1 = 7
Answer : z = 3

Question. 2v-(-10) = 4
Answer : v = -3

Question. 3z-2 = -17
Answer : z = -5

Question. -3c + 7 = 37
Answer : c = -10

Question. -2c + 4 = 18
Answer : c = -7

Question. 2v + 7 = 19
Answer : v = 6

Question. 2c-10 = 6
Answer : c = 8

Question. 3x-7 = -19
Answer : x = -4

Question. -2c-(-6) = 16
Answer : c = -5

Question. -2a + (-8) = -4
Answer : a = -2

Question. 3z-9 = 9
Answer : z = 6

Question. -3a + 6 = 27
Answer : a = -7

Question. 3b + (-4) = 14
Answer : b = 6

Question. -3c + 3 = 15
Answer : c = -4

Question. -2z + 8 = 14
Answer : z = -3

Question. 3c-4 = 23
Answer : c = 9

Question. -3c + 8 = -4
Answer : c = 4

Question. -3x-2 = 1
Answer : x = -1

Question. 2z + 2 = -10
Answer : z = -6

Question. 2v-7 = -5
Answer : v = 1

Question. 3v-(-1) = 13
Answer : v = 4

Question. 3c-7 = 5
Answer : c = 4

Question. 3z + (-4) = -1
Answer : z = 1

Question. 2v + (-9) = -17
Answer : v = -4

Question. 2b-2 = -22
Answer : b = -10

Question. 3z + 6 = 21
Answer : z = 5

Question. -2c-(-2) = -2
Answer : c = 2

Question. 3x-2 = -26
Answer : x = -8

Question. -2z-(-9) = 13
Answer : z = -2

Question. -2b + (-8) = -4
Answer : b = -2

Question. 2y + 1 = 13
Answer : y = 6

Question. 2u-(-9) = 15
Answer : u = 3

Question. 2b-5 = 7
Answer : b = 6

Question. 3y-5 = -32
Answer : y = -9

Question. -2b + (-7) = -7
Answer : b = 0

Question. 3v-(-6) = 6
Answer : v = 0
 

Question. Change the given equations into statements
(i) 3x + 5 = 27
(ii) 7x = 49
(iii) 5x + 7 = 9
(iv) x/3 + 5 8
(v) (3/2)y+7 = 29
Answer : (i) Adding 5 to the 3 times of a number give 27
(ii) 7 times a number is 49.
(iii) Adding 7 to five times of a number gives 9.
(iv) Adding 5 to one third of x gives 8.
(v) Adding 7 to 3/2 of a number gives 29.

Question. 4y = 2/3 (3y-7)
Answer : y = –7/3

Question. 2/5 (2x-1) = 4/5 (3x-5)
Answer : x = 9/4

Question. Form equation for the following statements
(i) 5 times a number is 25.
(ii) One fourth of a number is 20.
(iii) A number divided by 5 gives seven less than twice the number.
(iv) 13 subtracted from three times a number is 8.
(v) The length of a rectangle is 8 meters more than its breath and its perimeter is 256 m.
Answer : (i) 5x = 25
(ii) y/4 = 20
(iii) x/5 = 2x - 7
(iv) 3y – 13 = 8.
(v) 2(2b + 8) = 256

Question. Take any number. Multiply it by 3. Add 49 and divide the result by 7 then we get 7.
Express this in the form of an equation.
Solve the following equations and find the value of the variable :
Answer : 3x+49/7 = 7

Question. 5x  – 7/3 = – 3x - 2/3
Answer : x = 5/6

Question. y/9  - y/12 = 1/108
Answer : y = 1/2

Question. 2y+5/3 = 3y – 8
Answer : y = 29/7

Question. If the smaller of two consecutive odd integers is doubled, the result is 7 more than the larger integer. Find the two integers.
Answer : 9, 11.

Question. 7 – 5x = 5 – 7
Answer : x = –1.

Question. y - 2 = 1/5 (3y – 1)
Answer : y = 9/2

Question. The combined cost of a T.V. and a fan is Rs. 13000. The cost of T.V. is 12 times the cost of the fan. Find the cost of each.
Answer : Rs. 1000 = cost of fan; Rs. 12000 = cost of T.V.

Question. Nine added to thrice a whole number gives 45, find the number.
Answer : x = 12.

Question. When the smaller of two consecutive integers is added to three time the larger integer the result is 43. Find both the numbers.
Answer : 10, 11

Question. P/4 + 7 = 5
Answer : P = –8.

Question. 5/3(2y-1) = (3y-5)
Answer : y = –10

Question. The sum of ages of father and son is 75 years. If the age of the son is 25 years, find the age of father.
Answer : 50 years

Question. 3x/8 = 27.
Answer : x = 72

Question. Umesh has three boxes of different fruits. A weighs 5 kg. more than box B and box C weighs 10 kg. more that box B. The total weight of three boxes is 48 kg. How many kg. does box A weighs?
Answer : 16 kg

Question. 4x + 0.8 = 7.2
Answer : x = 1.6

Question. (5/2) x = 10
Answer : x = 4.

Question. 2y + 3 = 5y + 7
Answer : y = –4/3

Question. If x = y + 2, find the value of y from the equation  y – x-2/2  = 2/3
Answer : y = 4/3

Question. The age of father is 30 years more than that of his son. 5 years hence father’s age will be thrice of his son’s age, find their present ages.
Answer : 10 years; 40 years

Question. Find 3 consecutive numbers whose sum is 45.
Answer : 14, 15, 16.

Question. 2x-3/3 = 1 – (2/3)x
Answer : x = 3/2

Please refer to attached file for CBSE Clas 7 Maths Worksheet - Simple Equations