a: \(\dfrac{-10}{6}< \dfrac{x}{2}< -\dfrac{7}{6}\)
\(\Leftrightarrow\dfrac{-10}{6}< \dfrac{3x}{6}< \dfrac{-7}{6}\)
=>3x=-9(vì x là số nguyên)
hay x=-3
b: \(\dfrac{-3}{4}< \dfrac{x}{6}< \dfrac{-1}{2}\)
\(\Leftrightarrow\dfrac{-9}{12}< \dfrac{2x}{12}< \dfrac{-6}{12}\)
\(\Leftrightarrow2x=-8\)
hay x=-4
c: \(\Leftrightarrow\dfrac{-12}{27}< \dfrac{-12}{4x}< \dfrac{-12}{30}\)
=>4x=28
hay x=7
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