Question

This is the problem i need help with. My teacher gave our class the answer but he didn't show us how to solve it! Help me please!!!

Solve for y

Answer 1

y = 19

Explanation:

2y + 2 + 20° = 60 because the sum of interior angles in a triangle is equal to 180°

2y + 22 = 60

2y = 38 divide both sides by 2

y = 19