(5\9×4\7+4\7)÷4\7简算
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(5\9×4\7+4\7)÷4\7简算
(5\9×4\7+4\7)÷4\7简算
(5\9×4\7+4\7)÷4\7简算
(5\9×4\7+4\7)÷4\7
=(5/9+1)x4/7÷4/7
=14/9x1
=14/9
=1又5/9
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