Question

Find the value of x
A.21
B.30
C.9
D.6

Answer 1

x = 6

Explanation:

The two angles are vertical angles and vertical angles are equal

5x = 3x+12

Subtract 3x from each side

5x -3x = 3x+12-3x

2x= 12

Divide by 2

2x/2 = 12/2

x = 6