Question

I need help
Solve for x

Answer 1

x = 21

Explanation:

5x + 15 = 2x + 78

3x = 63

x = 21

Answer 2

x = 21°

Explanation:

As corresponding angles in parallel lines are equal,

5x + 15 = 2x + 78

And now let us solve for x.

5x + 15 = 2x + 78

5x + 15 - 2x = 78

3x + 15 = 78

3x = 78 - 15

3x = 63

Divide both sides by 3.

x = 21°