Question

Giúp tớ với

Answer 1

a: \(\dfrac{8}{7}\cdot y=\dfrac{3}{5}\)

nên \(y=\dfrac{3}{5}:\dfrac{8}{7}=\dfrac{3}{5}\cdot\dfrac{7}{8}=\dfrac{21}{40}\)

b: y+5/2=6

nên y=6-5/2=12/2-5/2=7/2

Answer 2

`a)8/7xxy=3/5`

`y=3/5:8/7`

`y=3/5xx7/8=21/40`

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`b)5/2+y=6`

`y=6-5/2`

`y=12-5/2=7/2`

Answer 3

a)

8/7 x y = 3/5

y = 3/5 : 8/7

y = 3/5 x 7/8

y = 21/40

b)

5/2 + y = 6

y = 6 - 5/2

y = 7/2

Answer 4

a)\(y=\dfrac{3}{5}:\dfrac{8}{7}=\dfrac{21}{40}\)

b)\(y=6-\dfrac{5}{2}=\dfrac{12}{2}-\dfrac{5}{2}=\dfrac{7}{2}\)

Answer 5

a). 8/7 x y =3/5 

              y = 8/7 :3/5 

              y = 21/40 

b). 5/2 + y = 6 

              y = 5/2 -6

              y = 7/2