Question

I really need help !!

Answer 1

The two angles when added together need to equal 180 degrees:

-4x +5 + -13x +39 = 180

Simplify:

-17x + 44 = 180

Subtract 44 from each side:

-17x = 136

Divide both sides by -17:

x = 136 / -17

x = -8