\(\dfrac{3}{5}:\left(\dfrac{-1}{15}-\dfrac{1}{6}\right)+\dfrac{3}{5}:\left(\dfrac{-1}{3}-\dfrac{16}{15}\right)\)
\(=\dfrac{3}{5}:\dfrac{-4}{15}+\dfrac{3}{5}:\dfrac{-7}{5}\)
\(=\dfrac{3}{5}.\dfrac{-15}{4}+\dfrac{3}{5}.\dfrac{-5}{7}\)
\(=\dfrac{3}{5}.\left(\dfrac{-15}{4}+\dfrac{-5}{7}\right)\)
\(=\dfrac{3}{5}.\dfrac{85}{28}\)
\(=\dfrac{51}{28}\)
Tick mk tiếp nha !!! (mk ko chắc là đúng đâu, nhớ tính lại nhé )
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