Question

4/7 is the result when 1/2 and x are added. What is the value of x? Enter your answer in the box as a fraction in simplest form.

Answer 1

So, 4/7 = 1/2 + x

Subtract 1/2 from both sides.

4/7 - 1/2 = x

You need to find a common denominator between 2 and 7, which is 14

So you get 8/14 - 7/14 = x

x=1/14

Answer 2

1/2 + x = 4/7

(2x+1)/2 = 4/7

2x+1 = 8/7

2x = 8/7-1

2x = 1/7

x = 1/14