Maths class 7 chapter 4 simple equation

The sum of three times x and 10 is 13.

• (a) 3x + 10 = 13

• (b) 3x – 10 = 13

• (c) 3x + 13 = 10

• (d) none of these

If you subtract 3 from 6 times a number, you get 9

• (a) 3x – 6 = 9

• (b) 6x – 3 = 9

• (c) 6x + 3 = 9

• (d) 3x + 6 = 9

Write the following statement in the form of an equation:

One third of a number plus 2 is 3

• (a) m/3 – 2 = 3

• (b) m/3+ 2 = 3

• (c) m/2– 3 = 3

• (d) m/2 + 3 = 3

Taking away 5 from x gives 10

• (a) x – 5 = 10

• (b) x + 5 = 10

• (c) x – 10 – 5

• (d) none of these

Add 1 to three times n to get 7

• (a) 3n + 1 = 7

• (b) 3n – 1 = 7

• (c) 3n + 7 = 1

• (d) none of these

The solution of the equation x + 3 = 0 is

• (a) 3

• (b) -3

• (c) 0

• (d) 1

The solution of the equation 7n + 5 = 12 is

• (a) 0

• (b) – 1

• (c) 1

• (d) 5

The solution of the equation 3p – 2 = 4 is

• (a) 0

• (b) 1

• (c) 2

• (d) 3

The solution of the equation 3 m + 7=16 is

• (a) 1

• (b) 2

• (c) 3

• (d) 4

The solution of the equation 2 (m + 3) = 8 is

• (a) 1

• (b) 2

• (c) 3

• (d) 4