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-(4+x)=2(3-x)
-4-x= 6-2x
-x+2x=6+4
x=10
-3(y+6)-y=2(y+9)
-3y-18-y=2y+18
-3y-y-2y=18+18
-6y=36/:(-6)
y=-6
(x-7)-2(3x+5)=3
x-7-6x-10=3
x-6x=3+10+7
-5x=20/(-5)
x=4