Question

Solve for the value of y and the measures of angles 1 and 3.
m angle 1=(10y+2)
m angle 3=(12y-8)

Answer 1

Since there is no INFO that shows the relationship between angles 1 and 3,
i'm going to assume they are equal:

10y + 2 = 12y - 8,
10y - 12y = -8 - 2,
-2y = -10,
y = 5.

10y + 2 = 10*5 + 2 = 52 deg.
12y - 8 = 12*5 - 8 = 52 deg.

Answer 2

(12x-15)=(3x+45)