解方程:(3-x)/(x-4)+1/(4-x)=1;(3-x)/(x-2)=(4x+10)/(3x-6)-1.

问题描述:

解方程:(3-x)/(x-4)+1/(4-x)=1;(3-x)/(x-2)=(4x+10)/(3x-6)-1.

(3-x)/(x-4)+1/(4-x)=1;
(3-x)/(x-4)-1/(x-4)=1;
3-x-1=x-4
2x=6
x=3
(3-x)/(x-2)=(4x+10)/(3x-6)-1.
3(3-x)=4x+10-3x+6
4x=-7
x=-7/4