7x+6=8-3x 4-3(20-x)=5x-12
问题描述:
7x+6=8-3x 4-3(20-x)=5x-12
答
10x=2 x=1/5
2x=44 x=22
7x+6=8-3x 4-3(20-x)=5x-12
10x=2 x=1/5
2x=44 x=22