(50-x)/x=25%,这题怎么算?
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(50-x)/x=25%,这题怎么算?(50-x)/x=25%,这题怎么算?(50-x)/x=25%,这题怎么算?(50-x)/x=25%(50-x)/x=1/44(50-x)=x200-4x=x4x
(50-x)/x=25%,这题怎么算?
(50-x)/x=25%,这题怎么算?
(50-x)/x=25%,这题怎么算?
(50-x)/x=25%
(50-x)/x=1/4
4(50-x)=x
200-4x=x
4x+x=200
5x=200
x=40
经检验x=40是方程的解
50-x=0.25x
50=1.25x
x=50/1.25=40
50-x=25℅x
50-x=0.25x
x+0.25x=50
1.25x=50
x=40
50-x=25％x 125％x=50 x=40
（50－x）/x＝25％
（50－x）/x＝1/4
x＝200－4x
5x＝200
x＝40
50-x=0.25x
50=1.25x
x=50/1.25=40
50-x=(1/4)x
(5/4)x=50
x=40
400.
(50-x)/x=25%__(50-x)=0.25x__0.25x+x=50__1.25x=50__x=40 ok!
50-x=0.25x
1.25x=50
x=4
快点采纳吧。。
谢谢
（50-x）/x=25%
50-x=25%x
50=(1/4+1)x
50=5/4x
x=40
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