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2x-4y=14 |x3| 6x-12y=42
6x+6y=6
6x-12y=42
18y = -36
y = -2
3x+3y=3
3x+3(-2)=3
3x-6=3
3x = 9
x = 3
4x-3y= 4(3) - 3(-2)
= 12 - (-6)
= 12+6
= 18