(47-x)/(55-x)=5/6如何解答

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(47-x)/(55-x)=5/6如何解答

(47-x)/(55-x)=5/6如何解答
(47-x)/(55-x)=5/6如何解答

(47-x)/(55-x)=5/6如何解答
(47-x)/(55-x)=5/6
两边乘以6(55-x)
6(47-x)=5(55-x)
282-6x=275-5x
6x-5x=282-275
x=7

(47-x)/(55-x)=5/6
5(55-x)=6(47-x)
275-5x=282-6x
6x-5x=282-275
x=7

(47-x)/(55-x)=5/6
两边乘以6(55-x)
6(47-x)=5(55-x)
282-6x=275-5x
6x-5x=282-275
x=7