4x+2-5x-1=1
问题描述:
4x+2-5x-1=1
答
4x+2-5x-1=1
4x-5x=1+1-2
-x=0
x=0
4x+2-5x-1=1
4x+2-5x-1=1
4x-5x=1+1-2
-x=0
x=0