Question

Timf x,biết:

\(-4\frac{3}{5}.2\frac{4}{23}\le x\le-2\frac{3}{5}:1\frac{6}{15}\)

Giups mk vs

Answer 1

Không ghi lại đề

Ta có : \(-4\frac{3}{5}×2\frac{4}{23}\)

\(=-\frac{23}{5}×\frac{50}{23}\)

\(=-\frac{50}{5}=-10\)

\(-2\frac{3}{5}\div1\frac{6}{15}\)

\(=-\frac{13}{5}\div\frac{7}{5}\) 

\(=-\frac{13}{5}×\frac{5}{7}\)

\(=-\frac{13}{7}\)

\(\Rightarrow\) \(-10\le x\le\frac{-13}{7}\)

\(\Rightarrow\) \(\frac{-70}{7}\le x\le\frac{-13}{7}\)

\(\Rightarrow x\in\left\{\frac{-70}{7};\frac{-69}{7};...;-2;\frac{-13}{7}\right\}\)

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