(1)7-2(5y-1)=0 (2)4a-2=3(2a-2) (3)-3(2-x)-4x=60
解:7-10y+2=0 解:4a-2=6a-6 解:-6+3x-4x=60
9-10y=0 4a-6a=2-6 -x=60+6
-10y=-9 -2a=-4 ...
(1)7-2(5y-1)=0 (2)4a-2=3(2a-2) (3)-3(2-x)-4x=60
解:7-10y+2=0 解:4a-2=6a-6 解:-6+3x-4x=60
9-10y=0 4a-6a=2-6 -x=60+6
-10y=-9 -2a=-4 ...