Question

3 angles on a straight line.

angle 1 is 6x+12
angle 2 is 8x-10
angle 3 is y
Find y

Answer 1

y = 178° - 14x

Explanation:

`(6x + 12) + (8x + 10) + y = {180}^(o) \\ 6x + 12 + 8x + 10 + y = {180}^(o) \\ 14x + y + 12 - 10 = {180}^(o) \\ 14x + y + 2 = {180}^(o) \\ 14x + y = {180}^(o) - 2 \\ 14x + y = {178}^(o) \\ y = {178}^(o) - 14x \\`