Question

 

Answer 1

chỉ cần bài tìm y ạ:3

Answer 2

\(y × 2 , 5 + y × 6 , 5 + y = 25\)

\(y × ( 2 , 5 + 6 , 5 + 1 ) = 25\)

\(y × 10 = 25\)

`y=25:10`

`y=2,5`

Answer 3

`y×2,5+y×6,5+y=25`

`y×(2,5+6,5+1)=25`

`y×10=25`

`y=25/10`

`y=2,5`

Answer 4

`y xx2,5+y xx6,5+y=25`

`y xx(2,5+6,5+1)=25`

`y xx10=25`

`y=25:10=2,5`