12-2x=3x+2/3x+3=2x+5/7x+4=8x
问题描述:
12-2x=3x+2/3x+3=2x+5/7x+4=8x
答
12-2X=A
3X+2/3X+3=A
2X+5/7X=A
8X=A
这样会吧!