If you would like to solve the system of equations, you can do this using the following steps:
2x + 3y = 40
-2x + 2y = 20
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2x + 3y - 2x + 2y = 40 + 20
5y = 60 /5
y = 60/5
y = 12
2x + 3y = 40
2x + 3 * 12 = 40
2x + 36 = 40
2x = 40 - 36
2x = 4
x = 4/2
x = 2
(x, y) = (2, 12)
The correct result would be d. x = 2, y = 12.
