Question

\(\left(\dfrac{1}{7}-\dfrac{1}{3}\right)x=\left(\dfrac{-3}{2}\right)^2\)

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Ai nhanh mình tích cho.

Answer 1

\(\left(\dfrac{1}{7}-\dfrac{1}{3}\right)x=\left(\dfrac{-3}{2}\right)^2\Leftrightarrow\dfrac{-4}{21}x=\dfrac{9}{4}\Leftrightarrow x=\dfrac{\dfrac{9}{4}}{\dfrac{-4}{21}}=\dfrac{-189}{16}\)

vậy \(x=\dfrac{-189}{16}\)

Answer 2

\(\left(\dfrac{1}{7}-\dfrac{1}{3}\right)x=\left(\dfrac{-3}{2}\right)^2\)

\(\Rightarrow\dfrac{-4}{21}x=\dfrac{9}{4}\)

\(\Rightarrow x=\dfrac{9}{4}\cdot\dfrac{21}{-4}\)

\(\Rightarrow x=\dfrac{-189}{16}\)