Question

Find the value of x


(A) x= 135
(B) x= 25
(C) x= 35
(D) x= 90

Answer 1

THE SUM OF THE INNER ANGLES IS 180°

`(x - 7) + (2x - 8) + 90 = 180 \\ x - 7 + 2x - 8 + 90 = 180 \\ x + 2x = 180 + 7 + 8 - 90 \\ 3x = 105 \\ (3x)/(3) = (105)/(3) \\ x = 35`

THEREFORE x=35°

OPTION C IS THE RIGHT ANSWER.