Question

What is the value of x

Answer 1

x=15

Explanation:

You know that the total of the angel is 90. This means that if we add 30 and 4x, we will get 90.

90=30+4x

60=4x

15=x

Answer 2

15

Explanation:

90=30+4x

subtract 30 from both sides

60=4x

divide both sides by 4

15=x