解方程(1)1/2[x/3-1/2(3/2x-1)]=x/12 (2)2/5[5/2(1/6x-1/2)-5]-3...
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发布时间:2024-10-23 17:23
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时间:2024-11-05 23:09
1)1/2[x/3-1/2(3/2x-1)]=x/12
6(x/3-3/4x+1/2)=x
2x-9/2x+3=x
4x-9x+6=2x
-5x-2x=-6
x=6/7
(2)2/5[5/2(1/6x-1/2)-5]-3=2x
1/6x-1/2-5-3=2x
x-3-48=12x
x-12x=51
-11x=51
x=-51/11