(2-x)/(x-3) + 1/(3-x)= 1
移项:(2-x)/(x-3) + 1/(3-x)- 1 = 0
统分:(2-x)/(x-3) - 1/(x-3)- (x-3)/(x-3) = 0
{ (2-x) - 1 - (x-3) } /(x-3) = 0
{ -2x +4 } /(x-3) = 0
-2x +4=0
x=2
先通分相加,即(2—x—1)/(x—3)=1,于是有1—x=x—3,得出x=2
(2-x)/(x-3)-1/(x-3)=1
(4-2x)/(x-3)=0
因为x-3是分母,所以不为0
4-2x=0
x=2
你这个方程应该写错了,有X-X项?正常的话,方程两边成X,解一元二次方程。
(2-x)/(x-3)+1/(3-x)=1
(2-x)/(x-3)-1/(x-3)=1
(2-x-1)/(x-3)=1
(1-x)(x-3)=1
1-x=x-3
2x=4
x=2