(x^2-x分之x+5)=(x-1分之5)-(x分之3)怎么做
问题描述:
(x^2-x分之x+5)=(x-1分之5)-(x分之3)怎么做
答
(x+5)/(x²-x)=5/(x-1)-3/x 方程两边乘以 x(x-1) 得
(x+5)=5x-3(x-1)
x+5=5x-3x+3
x+5=2x+3
x=5-3=2
x=2