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5/6×2/15+2/15÷5/4简便6/5不是5/6，打错了还望改改
题目详情
5/6×2/15+2/15÷5/4 简便
6/5 不是5/6，打错了 还望改改
6/5 不是5/6，打错了 还望改改
▼优质解答
答案和解析
5/6×2/15+2/15÷5/4
=5/6×2/15+2/15×4/5
=(5/6+4/5 )×2/15
=(25/30+24/30 )×2/15
=49/30×2/15
=49/15×1/15
=49/225
=5/6×2/15+2/15×4/5
=(5/6+4/5 )×2/15
=(25/30+24/30 )×2/15
=49/30×2/15
=49/15×1/15
=49/225
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