3000/x-10 -3000/x=15 36/x -36/x=3 18/x=36/1.25 -6 60/x +240/2x=9 1200/x-1200/x+2 过程一定要清楚空格后面是为了区分开来所以36/x -36/x-3=1 18/x=36/1.25 -6 60/x +240/2x=9 1200/x-1200/x+2=30 不好意思 x-10是分母!1.25是分母!不

3000/x-10 -3000/x=15 36/x -36/x=3 18/x=36/1.25 -6 60/x +240/2x=9 1200/x-1200/x+2 过程一定要清楚空格后面是为了区分开来所以36/x -36/x-3=1 18/x=36/1.25 -6 60/x +240/2x=9 1200/x-1200/x+2=30 不好意思 x-10是分母!1.25是分母!不
3000/x-10 -3000/x=15 36/x -36/x=3 18/x=36/1.25 -6 60/x +240/2x=9 1200/x-1200/x+2 过程一定要清楚
空格后面是为了区分开来所以36/x -36/x-3=1 18/x=36/1.25 -6 60/x +240/2x=9 1200/x-1200/x+2=30 不好意思 x-10是分母!1.25是分母!不是的36/x为一份中间有空个你看一下谢谢了

3000/x-10 -3000/x=15 36/x -36/x=3 18/x=36/1.25 -6 60/x +240/2x=9 1200/x-1200/x+2 过程一定要清楚空格后面是为了区分开来所以36/x -36/x-3=1 18/x=36/1.25 -6 60/x +240/2x=9 1200/x-1200/x+2=30 不好意思 x-10是分母!1.25是分母!不
(1) ,
3000/(x-10) -3000/x=15 ,
200x-200(x-10)=x(x-10) ,
x²-10x-2000=0 ,
(x+40)(x-50)=0 ,
∴ x1=-40 ,
x2=50 .
(2) ,
36/x -36/(x-3)=1 ,
36(x-3)-36x=x(x-3) ,
x²-3x+108=0 ,
△＜0 ,无解 .
（可能是：）
36/x -36/(x+3)=1 ,
36(x+3)-36x=x(x+3) ,
x²+3x-108=0 ,
(x-12)(x+9)=0 ,
∴ x1=12 ,
x2=-9 .
(3) ,
18/x=36/1.25 -6 ,
3/x=24/5 -1 ,
15=24x-5x ,
∴ x=15/19 .
(4) ,
60/x +240/2x=9 ,
20/x +40/x=3 ,
20+40=3x ,
∴ x=20 .
(5) ,
1200/x-1200/(x+2)=30 ,
40(x+2)-40x=x(x+2) ,
x²+2x-80=0 ,
(x-10)(x+8)=0 ,
∴ x1=10 ,
x2=-8 .