Alan G. answered • 03/31/16
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Plug y = -2x + 6 into the second equation and solve for x:
0 = 3(-2x+6) - x + 3
0 = -6x + 18 - x + 3
0 = -7x + 21
7x = 21
x = 3.
You can get y by plugging this into y = -2x+6. The answer is y = 0.
