Question

a)5 x X : 3/4 = 40/9

b) X/25 + 18/5 = 3 18/5

tìm X

 

Answer 1

`a)5 xx x :3/4 =40/9`

`=>5 xx x = 40/9 xx 3/4`

`=>5xx x=10/3`

`=>x=10/3 : 5`

`=>x=10/3 xx 1/5`

`=>x=2/3`

`b)x/25 + 18/5 = 3 18/5`

`=>x : 25 + 18/5=33/5`

`=> x: 25=33/5-18/5`

`=>x:25=3`

`=>x=25/3`