3(x-2)=x-(8-8x) 3x-2(x+3)=4(x-1)+7 3x-2{x-5(x+1)-4}=1 3/4{4/3(5/1x-2)-6}=1
人气:147 ℃ 时间:2020-01-29 15:20:01
解答
3(x-2)=x-(8-8x)
3x-6=x-8+8x
6x=2
x=1/3
x=3分之1
3x-2(x+3)=4(x-1)+7
3x-2x-6=4x-4+7
3x=-9
x=-3
3x-2{x-5(x+1)-4}=1
3x-2(x-5x-5-4)=1
3x+4x+9=1
7x=-8
x=-8/7
x=-8分之7
3/4{4/3(5/1x-2)-6}=1
5/1x-2-8=1
5/1x=11
x=55
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