Question

How do you solve `sqrt(y+7) = 8`?

Answer 1

`y=57`

Explanation:

`sqrt(y+7)=8`
`implies (y+7)^(1/2)=8`

Squaring both sides, we get

`implies {(y+7)^(1/2)}^2 =(8)^2`
`implies y+7=64`
`implies y=64-7=57`
`implies y=57`