解方程: 2x+7/8=7/8 x-7/9=2/9 2x-3/8=1-3/8
问题描述:
解方程: 2x+7/8=7/8 x-7/9=2/9 2x-3/8=1-3/8
答
2x+7/8=7/8
2x=0
x=0
x-7/9=2/9
x=7/9+2/9
x=1
2x-3/8=1-3/8
2x=1-3/8+3/8
2x=1
x=1/2