Question

Solve for x
87
(9x+6)

Answer 1

87 = (9x + 6) ( vertically opposite angles)
87-6 = 9x
81= 9x
x = 9

Answer 2

x = 9

Explanation:

The angle measuring 87 degrees and (9x + 6) degrees are vertical angles, therefore they're equal to one another.

`87 = 9x + 6\\81 = 9x\\9 = x`