0.5x-0.7=-1.3x+6.5
问题描述:
0.5x-0.7=-1.3x+6.5
答
1.3x+0.5x=6.5+0.7
1.8x=7.2
x=4
0.5x-0.7=-1.3x+6.5
1.3x+0.5x=6.5+0.7
1.8x=7.2
x=4