Question

How do you solve and check your solution given `y+7.2=21.9`?

Answer 1

`y=14.7`

Explanation:

`y+7.2=21.9`

We have to subtract 7.2 from both sides to isolate `y`.

Thus, `y=14.7`

To check the solution, substitute `14.7` for `y`.

`14.7 + 7.2 = 21.9`
`21.9=21.9`

Because `21.9` is equal to `21.9`, `y` is equal to `14.7`