(3/8+1/27)×8+19/27简便
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(3/8+1/27)×8+19/27简便(3/8+1/27)×8+19/27简便(3/8+1/27)×8+19/27简便(3/8+1/27)×8+19/27=3/8*8+1/27*8+19/27=3+
(3/8+1/27)×8+19/27简便
(3/8+1/27)×8+19/27
简便
(3/8+1/27)×8+19/27简便
(3/8+1/27)×8+19/27
=3/8*8+1/27*8+19/27
=3+(8/27+19/27)
=3+27/27
=3+1
=4
5
4
(3/8)*8+8/27+19/27=3+27/27=4
(3/8+1/27)×8+19/27简便
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