Answer:
x = 21
Step-by-step explanation:
5x + 15 = 2x + 78
3x = 63
x = 21°
As corresponding angles in parallel lines are equal,
And now let us solve for x.
5x + 15 - 2x = 78
3x + 15 = 78
3x = 78 - 15
Divide both sides by 3.
