Question

3 / 5 x y = 4 / 7

25 / 3 - y = 5/6

Answer 1

\(\dfrac{3}{5}\times y=\dfrac{4}{7}\)

\(y=\dfrac{4}{7}\div\dfrac{3}{5}\)

\(y=\dfrac{4}{7}\times\dfrac{5}{3}\)

\(y=\dfrac{20}{21}\)

Answer 2

y = 4/7 :3/5

y = 20/21

 

y= 25/3- 5/6

y= 15/2

Answer 3

3/5 x y = 4/7

         y = 4/7 : 3/5

         y = 20/21

vậy x=...

25/3 - y = 5/6

          y = 25/3 - 5/6

          y = 15/2

vậy x=...

Answer 4

\(\dfrac{25}{3}-y=\dfrac{5}{6}\)

\(y=\dfrac{25}{3}-\dfrac{5}{6}\)

\(y=\dfrac{45}{6}=\dfrac{15}{2}\)