Question

-5/y=20/28 tìm số nguyên y giải giúp tớ với

Answer 1

\(\frac{-5}{y}=\frac{20}{28}\)

\(\Rightarrow y=\frac{28\cdot\left(-5\right)}{20}\)

\(\Rightarrow y=-\frac{140}{20}\)

\(\Rightarrow y=-7\)

Answer 2

Ta có: \(\frac{-5}{y}=\frac{20}{28}\)

\(\Rightarrow20y=-5\cdot28\)

\(\Rightarrow20y=-140\)

\(\Rightarrow y=\frac{-140}{20}\)

\(\Rightarrow y=-7\)