(27*1又4/9+6又5/9*27)*1.25简便
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![(27*1又4/9+6又5/9*27)*1.25简便](/uploads/image/z/8692908-60-8.jpg?t=%2827%2A1%E5%8F%884%2F9%2B6%E5%8F%885%2F9%2A27%29%2A1.25%E7%AE%80%E4%BE%BF)
(27*1又4/9+6又5/9*27)*1.25简便
(27*1又4/9+6又5/9*27)*1.25
简便
(27*1又4/9+6又5/9*27)*1.25简便
(27*1又4/9+6又5/9*27)*1.25
=27*(1+4/9+6+5/9)*5/4
=27*8*5/4
=27*10
=270
(27×1 +6 ×27) ×1.25
=27×(1 +6 )×1.25
=27×8×1.25
=27×10
=270
原式=27*(1又4/9+6又5/9)*1.25
=27*8*5/4
=270