If 1 is subtracted from a number and the difference is multiplied by 1/2 the result is 7.

Question

Express the given statement as an equation.

If 1 is subtracted from a number and the difference is multiplied by 1/2 the result is 7.

Answer 1

Let the number be x.

On subtracting 1 from it, we get x – 1

Multiplying it by 1/2 we get 1/2(x-1)

1/2(x-1) = 7 is the required equation.