2(x-2)-(4x-1)=9(1-x)的解,
问题描述:
2(x-2)-(4x-1)=9(1-x)的解,
答
答:
2(x-2)-(4x-1)=9(1-x)
2x-4-4x+1=9-9x
-2x-3=9-9x
移项:
9x-2x=9+3
7x=12
x=12/7