Question

For what values of x and y are the triangles congruent?

Answer 1

For y
since both triangles are congruent,
6y-8=2y+8
4y=16
y=4
For x
5x-5y=2y+7
since y is 4, substitute y to 4
so,
5x-5(4)=2(4)+7
5x-20=15
5x=35
x=7

Answer 2

Yeah, what he said...x=7 :)