Question

The question is in the picture​

Answer 1

y = 54

Explanation:

Two of the sides are congruent, so the angles that are facing the two sides are also congruent, so:

3(x + 7) = 63

3x + 21 = 63

3x = 42

x = 14

A triangle equals 180 degrees, and input 14 into the equation, so:

3(14 + 7) + 63 + y = 180

3(21) + 63 + y = 180

63 + 63 + y = 180

126 + y = 180

y = 54

Answer 2

the answer is angle y = 54. ........