Subtract the 2nd row from the 1st row
-8x = 40
Solve for x in the equation above
x = -5
Substitute x = -5 into any of the two equations above. Let's pick the first equation; -3x + 2y = 23
-3 × -5 + 2y = 23
Solve for y in the above equation
y = 4
Therefore,
x = -5
y = 4
