513:35=57:x 怎么解

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513:35=57:x怎么解513:35=57:x怎么解513:35=57:x怎么解513:35=57:x513x=35*57x=35*57/513x=1995/513x=3.89

513:35=57:x 怎么解
513:35=57:x 怎么解

513:35=57:x 怎么解
513:35=57:x
513x=35*57
x=35*57/513
x=1995/513
x=3.89