7: ⑴ 7/24 7÷24=7/24
⑵ 21/25 21÷25=21/25
⑶ 17/20 17÷20=17/20
⑷ 2/5 2÷5=2/5
8: 1÷3=1/3
2÷3=2/3
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7: ⑴ 7/24 7÷24=7/24
⑵ 21/25 21÷25=21/25
⑶ 17/20 17÷20=17/20
⑷ 2/5 2÷5=2/5
8: 1÷3=1/3
2÷3=2/3
http://m.ksjqmj.com/wunianjidaan/2285.html
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