2(x-2)+3(4x-1)=9(x-1)+7
问题描述:
2(x-2)+3(4x-1)=9(x-1)+7
答
2(x-2)+3(4x-1)=9(x-1)+7
2x-4+12x-3=9x-9+7
14x-7=9x-2
14x-9x=7-2
5x=5
x=1