(30-x)8/13=25-x怎么解
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(30-x)8/13=25-x怎么解
(30-x)8/13=25-x怎么解
(30-x)8/13=25-x怎么解
(30-x)8/13=25-x
8(30-x)=13(25-x)
240-8x=325-13x
13x-8x=325-240
5x=85
x=17
(30-x)8/13=25-x
(30-x)8=(25-x)13
240-8x=25*13-13x
5x=85
x=17