(-4-1)/(2-1)=(-9+4)/(x-2) 怎么解x
问题描述:
(-4-1)/(2-1)=(-9+4)/(x-2) 怎么解x
答
-5/1=-5/(x-2)
-5=-5/(x-2)
1=1/(x-2)
x-2=1
x=3