(1)6+2(x-3)=X
6+2x-6=x
2x-x=0
x=0
(2)8-2(x-7)=x-(x-4)
8-2x+14=x-x+4
-2x=-18
x=9
(3)2x-(1.5x-1)=2(1.5x-1)
2x-3(1.5x-1)=0
2x-4.5x=-3
-2.5x=-3
x=6/5
(1)6+2(x-3)=X (2)8-2(x-7)=x-(x-4) (3)2x-(1.5x-1)=2(1.5x-1)
(1)6+2(x-3)=X (2)8-2(x-7)=x-(x-4) (3)2x-(1.5x-1)=2(1.5x-1)
数学人气:941 ℃时间:2020-05-05 14:40:48
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