What is the measure of angle A?
What is the measure of angle B?

<A ≅ <C
5y - 3 = 3y + 27
2y = 30
y = 15
<A = 5y - 3
<A = 5(15) - 3
<A = 75 - 3
<A = 72
<A + <B = 180
72 + <B = 180
<B = 108
Hope this helps!