(31/20-26/45)×(-36/35)

03/12/2021

By Katherine

(31/20-26/45)×(-36/35) { "@context": "https://schema.org", "@type": "QAPage", "mainEntity": { "@type": "Question", "name": " (31/20-26/45)×(-36/35)

0 bình luận về “(31/20-26/45)×(-36/35)<x<(51/56+8/21+1/3)×8/13”

1. Đáp án: x=0

    

   Giải thích các bước giải:

   $\begin{array}{l}
   \left( {\frac{{31}}{{20}} – \frac{{26}}{{45}}} \right).\left( { – \frac{{36}}{{35}}} \right) < x < \left( {\frac{{51}}{{56}} + \frac{8}{{21}} + \frac{1}{3}} \right).\frac{8}{{13}}\\
    \Rightarrow \frac{{31.9 – 26.4}}{{180}}.\frac{{\left( { – 36} \right)}}{{35}} < x < \frac{{51.3 + 8.8 + 56}}{{168}}.\frac{8}{{13}}\\
    \Rightarrow  – 1 < x < 1\\
    \Rightarrow x = 0
   \end{array}$

   Vậy x=0

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