(5x-225)/75=x/30怎么解?
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(5x-225)/75=x/30怎么解?
(5x-225)/75=x/30怎么解?
(5x-225)/75=x/30怎么解?
(5x-225)/75=x/30
5x/75 - 225/75=x/30
5x/75 - x/30 = 225/75
x/15 - x/30 = 225/75
2x/30 - x/30 = 225/75
(2x-x)/30=225/75
x/30=225/75
x=30*225/75=.