Answer:
∠ 2 = 104°
Step-by-step explanation:
Since the trees are parallel, then
∠ 2 and 76° are same- side interior angles and are supplementary, thus
∠ 2 + 76° = 180° ( subtract 76° from both sides )
∠ 2 = 104°
You combine like terms like 8y+13y which gives you 21y and don't forget the -5x so your simplified equation would end up being A. 21 - 5x