Nguyễn Anh Khôi
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2025-03-14 20:10:24
a, \(x=\dfrac{-5}{12}+\dfrac{2}{3}x=\dfrac{3}{12}\)
b, \(x=\dfrac{8}{5}:\dfrac{-2}{3}x=\dfrac{-24}{10}\)
c, \(\dfrac{3}{7}.x=\dfrac{5}{7}x=\dfrac{5}{7}:\dfrac{3}{7}x=\dfrac{35}{21}\)
2025-03-14 19:54:44
a, \(=\dfrac{-2}{7}+\dfrac{2}{7}x\dfrac{5}{3}=\dfrac{-2}{7}+\dfrac{10}{21}=\dfrac{4}{21}\)
b, \(=\left(\dfrac{-8}{19}+\dfrac{27}{19}\right)+\left(\dfrac{-4}{21}-\dfrac{17}{21}\right)=1+\left(-1\right)=0\)
c,\(=\dfrac{6}{5}\left(\dfrac{3}{13}-\dfrac{16}{13}\right)=\dfrac{6}{5}.\left(-1\right)=\dfrac{-6}{5}\)