Tính ​\(\left(\frac{136}{15}-\frac{28}{5}+\frac{62}{10}\right) \cdot \frac{21}{24}\)

Câu hỏi :

Tính \(\left(\frac{136}{15}-\frac{28}{5}+\frac{62}{10}\right) \cdot \frac{21}{24}\)

A.  \(\frac{203}{24}\)

B.  \(\frac{23}{24}\)

C.  \(\frac{11}{24}\)

D.  \(\frac{13}{24}\)

* Đáp án

A

* Hướng dẫn giải

 \(\left(\frac{136}{15}-\frac{28}{5}+\frac{62}{10}\right) \cdot \frac{21}{24}=\left(\frac{272}{30}-\frac{168}{30}+\frac{186}{30}\right) \cdot \frac{21}{24}=\frac{29}{3} \cdot \frac{21}{24}=\frac{203}{24}\)

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