4x - 10y = 12 2 (2x - 5y) = 12 2x - 5y = 12 / 2 2x - 5y = 6 This is the real answer. Now, if you want to find "x", it will be, 2x - 5y = 6 2x = 6 + 5y x = (6 + 5y) / 2
And, if you want to find "y", it will be, 2x - 5y = 6 5y = 2x - 6 y = (2x - 6) / 5
