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79除27加79除72简便运算?
展开全部
79/27+79/72
=79×1/27+79×1/72
=79×(1/27+1/72)
=79×(8/216+3/216)
=79×(11/216)
=79×11/216
=869/216
=4.023148148
≈4.02。
=79×1/27+79×1/72
=79×(1/27+1/72)
=79×(8/216+3/216)
=79×(11/216)
=79×11/216
=869/216
=4.023148148
≈4.02。
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