Question

3. Solve. Check Your Solutions
z - 12 = 30

Answer 1

`z = 42`

Explanation:

If we want to solve this algebraic equation, we need to isolate z on one side.

`z - 12 = 30`

Add 12 to both sides:

`z - 12+12 = 30+12\\\\z = 42`

To check our work, let's substitute 42 in as
`z`.

`42 - 12 = 30`

42 minus 12 is indeed 30.

Hope this helped!

Answer 2

z = 42

Explanation:

z - 12 = 30

Add 12 to each side

z - 12+12 = 30+12

z = 42

Check

42 - 12 = 30

30 = 30