2/3-3/5=()-()=() 3/7-2/21= 3/8+1/6=2/3-3/5=()-()=()3/7-2/21= 3/8+1/6=()+()=()2/15+1/35
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/14 17:42:53
![2/3-3/5=()-()=() 3/7-2/21= 3/8+1/6=2/3-3/5=()-()=()3/7-2/21= 3/8+1/6=()+()=()2/15+1/35](/uploads/image/z/368747-35-7.jpg?t=2%2F3-3%2F5%3D%EF%BC%88%EF%BC%89-%EF%BC%88%EF%BC%89%3D%EF%BC%88%EF%BC%89+3%2F7-2%2F21%3D+3%2F8%2B1%2F6%3D2%2F3-3%2F5%3D%EF%BC%88%EF%BC%89-%EF%BC%88%EF%BC%89%3D%EF%BC%88%EF%BC%893%2F7-2%2F21%3D+3%2F8%2B1%2F6%3D%EF%BC%88%EF%BC%89%2B%EF%BC%88%EF%BC%89%3D%EF%BC%88%EF%BC%892%2F15%2B1%2F35)
x͐KN0}BQP
m
M7EnBCHU
qrflGUx~(=]NQ\sوp 0#kmFGY EDG8s6zkجD8OLX*ִmN6Fx÷Fj7n&|Z,+al1E:(wvV(/OF
e
jPC[B䕺!{\uaRM88*Jg8$j1 }t!iJ"\LKS6L(XNH
2/3-3/5=()-()=() 3/7-2/21= 3/8+1/6=2/3-3/5=()-()=()3/7-2/21= 3/8+1/6=()+()=()2/15+1/35
2/3-3/5=()-()=() 3/7-2/21= 3/8+1/6=
2/3-3/5=()-()=()
3/7-2/21=
3/8+1/6=()+()=()
2/15+1/35
2/3-3/5=()-()=() 3/7-2/21= 3/8+1/6=2/3-3/5=()-()=()3/7-2/21= 3/8+1/6=()+()=()2/15+1/35
2/3-3/5=(10/15)-(9/15)=(1/15)
3/7-2/21= 9/21-2/21=7/21=1/3
3/8+1/6=(9/24)+(4/24)=(13/24)
2/15+1/35=14/105+3/105=17/105
此类题乃分数加减法题目,其法则如下 : 先通分,然后分母不变,分子相加或相减。
2/3--3/5=10/15--9/15=1/15
3/7--2/21=9/21--2/21=7/21
3/8+1/6=9/24+4/24=13/24
2/15+1/35=14/105+3/105=17/105