(40*41+50*x)/(40+x)=46
1个回答
(40*41+50*x)/(40+x)=46
40*41+50*x=46*(40+x)=46*40+46*x
1640+50x=1840+46x
4x=200
x=50
相关问题
(x-40)/40=x/50
40x25%+50%X=(40+X)40%帮忙解一下
50-49-48+47+46+45+44+43-42-41-40+39+98怎么简算呀?
2(40—x)=50+x
50X=40X+20
解方程 (1-40%)x-20=(40%x+20)50%
{13x+14y=41① {14x+13y=40②
13x+14y=41 14x+13y=40
X/50+(40-X)/30=1
40x-20(50-x)=200