(31/20-26/45)×(-36/35) 03/12/2021 Bởi Katherine (31/20-26/45)×(-36/35) { "@context": "https://schema.org", "@type": "QAPage", "mainEntity": { "@type": "Question", "name": " (31/20-26/45)×(-36/35)
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 Bình luận
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