Answer:
x = 21
y = 29
Step-by-step explanation:
Because of the parallel lines and the transversal, angles 3x - 3 and 60 are alternate interior angles that are congruent.
3x - 3 = 60
3x = 63
x = 21
Angles 4y + 4 and 60 are a linear pair, so they are supplementary, and their measures add to 180°.
4y + 4 + 60 = 180
4y + 64 = 180
4y = 116
y = 29
