Question

-3/5.y=21/10

Answer 1

\(\dfrac{-3}{5}.y=\dfrac{21}{10}\)

\(y=\dfrac{21}{10}:\dfrac{-3}{5}=\dfrac{21}{10}.\dfrac{-5}{3}\)

\(y=\dfrac{-7}{2}\)

Vậy \(y=\dfrac{-7}{2}\)

Answer 2

\(-\dfrac{3}{5}.y=\dfrac{21}{10}\)

\(\Rightarrow y=\dfrac{21}{10}:\left(-\dfrac{3}{5}\right)\)

\(\Rightarrow y=-3,5\)

Vậy \(y=-3,5\)

Answer 3

\(-\dfrac{3}{5}\).y=\(\dfrac{21}{10}\)

y=\(\dfrac{21}{10}\):\(-\dfrac{3}{5}\)

y=\(-\dfrac{7}{2}\)