求方程解:1/2x-3/(x+1)=8/9x-2/(3x+3)如题、1/2x-3/(x+1)=8/9x-2/(3x+3)
问题描述:
求方程解:1/2x-3/(x+1)=8/9x-2/(3x+3)
如题、
1/2x-3/(x+1)=8/9x-2/(3x+3)
答
1/2x-3/(x+1)=8/9x-2/(3x+3)
(8/9x-1/2x)=-[3/(x+1)-2/(3x+3)]
7/18x=-7/(3x+3)
1/6x=-1/(x+1)
6x=-x-1
x=-1/7