150%x-x=20,求解
2016-03-30 10:03发布
1214034187
0.5X=20，X就是40
150%x-x=20
1.5x-x=20
0.5x=20
x=20÷0.5
x=40
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付费偷看金额在0.1-10元之间
0.5X=20，X就是40
150%x-x=20
1.5x-x=20
0.5x=20
x=20÷0.5
x=40
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