How do I solve for x and y?

Question

Solve the 3x3 matrix for x and y

x+2 8 -3. = 2x+6 8 -3

7 10 -8. 7 10 -8

7 -2 y+2. 7 -2 x

Answer 1

There are two matrices and they are equal to each other:

x+2 8 -3 2x+6 8 -3

7 10 -8 vs 7 10 -8

7 -2 y+2 7 -2 x

Then x+2 = 2x+6 and y+2 = x

Solving the first equation:

2 = x+6

x = -4

this forces y= -6