2y = 4 (divide both sides by 2 to solve)
y = 2
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For y - 2y - 3y equals 0, y equals 0.
3x + 2y = 4; 2x - 2y = 16 Add; 5x = 20 so x = 4 and y is therefore -4
2y = 15 y = 15/2 y = 7.5
3x-2y=6 -2y=-3x+6 y=1.5x-3
4y+2 = 2y+6 4y-2y = 6-2 2y = 4 y = 2