Question

What is x? 1/2(180-x) + (90-x) = 120

Answer 1

`x = 40`

Explanation:

`=> 1/2(180 - x) + (90 - x) = 120`

`=> 180/2 - x/2 + 90 - x = 120`

`=> 90 - x/2 + 90 - x = 120`

`=> 90 + 90 - x - x/2 = 120`

`=> 180 - (3x)/2 = 120`

`=> (3x)/2 = 180 - 120`

`=> (3x)/2 = 60`

`=> x = 2/3 × 60`

`=> 40`