Question

y × 6 + y × 4 = 70

Answer 1

\(y\cdot6+y\cdot4=70\)

\(\Leftrightarrow y\cdot\left(6+4\right)=40\)

\(\Leftrightarrow10y=70\)

\(\Leftrightarrow y=7\)

Answer 2

`yxx6+yx4=70`
`yxx(4+6)=70`
`yxx10=70`
`y=70:10`
`y=7`

Answer 3

`yxx6+yxx4=70`
`yxx(4+6)=70`
`yxx10=70`
`y=70:10`
`y=7`

Answer 4

Ta có: 6y+4y=70

nên 10y=70

hay y=7

Vậy: y=7

Answer 5

y=7

Answer 6

y=7