Question

(x+30)/(6x-30)=5/7

X等于多少？

Answer 1

化简5*(6x-30)=7*(x+30)

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30x-150=7x+210

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23x=360

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x=360/23

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如上所述过程如上所述

Answer 2

(x + 30)/(6 x - 30) = 5/7

x = 360/23≈15.652

Answer 3

(x+30)/(6x-30)=5/7
解：
去分母
7(x+30)=5(6x-30)
去括号
7x+210=30x-150
移项
30x-7x=210+150
23x=360
去系数
x=360/23
检根
将x=360/23代入原方程的分母
6x-30≠0
所以原分式方程的解为
x=360/23。

Answer 4

(x+30)/(6x-30)=5/7
x+30=5/7×(6x-30)
x+30=30/7x-150/7
30/7x-x=30+150/7
23/7x=360/7
x=360/7×7/23
x=360/23
望采纳 谢谢~~

Answer 5

解：(X+30)/(6X-30)=5/7
则5(6X-30)=7(X+30)且6X-30≠0
30X-150=7X+210且X≠5
30X-7X=210+150
23X=360
X=360÷23
X=360/26