Question

tim y thoa man 7/y=4/5

 

Answer 1

\(\dfrac{7}{y}=\dfrac{4}{5}\\ \Rightarrow y=7:\dfrac{4}{5}\\ \Rightarrow y=\dfrac{35}{4}\)

Answer 2

y=8,75

Answer 3

7/y=4/5⇒y=7x5:4=\(\dfrac{35}{4}\)

Answer 4

7y=45⇒y=7:45⇒y=354

Answer 5

4.y=7.5

4.y=35

y=35:4

⇒y=35/4