(3/29-1/5)×29/3+1/5×29/3-5/12×4/9+-7/12×4/9-40/57Tính nhanh

(3/29-1/5)×29/3+1/5×29/3

-5/12×4/9+-7/12×4/9-40/57

Tính nhanh

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