x = 1, y = -3
-9x - 2y = -3 (1)
-2x -3y = 7 (2)
From (1), make new equation, y = (3-9x)/2 (3)
From the new equation (3), substitute the y value into (2). Solve it, and you get the value of x.
Once u get the value of x, substitute it into (3) then you get the value of y.
The step by step solution is in the image below :)
