Question

The sum of the measures of angle M and angle R is 90°

The measure of angle M is (5x + 10)°
The measure of angle R is 55°
What IS the value of x?

Answer 1

M+R=90 (Given)

(5x+10)+55=90 (given)

5x+10=90-55

5x+10=35

5x=35-10

5x=25

5x÷5=25÷5 (divide both sides by 5)

x=5