Решить по образцу: -3(3y+4)+4(2y-1)=0 -9y-12+8y-4=0
-y=4+12
-y=16
y=-6 1. -3.2n+4.8=-2(1.2n+2.4)
2. -5(0.8x-1.2)=-x+7.2
3. -40(-7x+5)=-1600
-y=4+12
-y=16
y=-6 1. -3.2n+4.8=-2(1.2n+2.4)
2. -5(0.8x-1.2)=-x+7.2
3. -40(-7x+5)=-1600
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