Answer:
Step-by-step explanation:
x does equal 7 so you know your vertical angle rule. 9x + 42 is same side exterior with 4y - 13, so the sum of them is 180.
9(7) + 42 + 4y - 13 = 180 and
63 + 42 + 4y - 13 = 180 and
92 + 4y = 180 and
4y = 88 so
y = 22
