5分之2-x=7分之1解方程 9分之7+x=12分之11解方程 x+(5分之4-4分之1)=3分之4解方程
5x+9分之5=9分之5解方程
8分之3-4分之1+x=15分之7解方程
人气:468 ℃ 时间:2020-01-29 10:03:17
解答
1.2/5-x=1/7 x=2/5-1/7 x=9/352.7/9+x=11/12 x=11/12-7/9 x=5/363.x+(4/5-1/4)=4/3 x=4/3-11/20 x=47/804.5x+5/9=5/9 5x=0 x=05.3/8-1/4+x=7/15 1/8+x=7/15 x=7/15-1/8 x=41/120
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