Simplify each expression

1 answer:

4 0

$-6x-4y+2+3x+12y-6=(-6x+3x)+(-4y+12y)+(2-6)\\\\=-3x+8y-4\\\\-15x-3y+16x+4y=(-15x+16x)+(-3y+4y)=x+y\\\\-6x-4y+2+3x-12y+6=(-6x+3x)+(-4y-12y)+(2+6)\\\\=-3x-16y+8\\\\2x+2y-6x-3+2y+6=(2x-6x)+(2y+2y)+(-3+6)\\\\=-4x+4y+3$

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