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3/8+1/5吧加3/8+2/5等于多少?
展开全部
3/8+1/5+3/8+2/5
=(3/8+3/8)+(1/5+2/5)
=3/4+3/5
=27/20
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=(3/8+3/8)+(1/5+2/5)
=3/4+3/5
=27/20
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