Question

Tell whether g=15 is a solution of 19-g=7

YES

NO

Answer 1

No.

Explanation:

To tell whether g = 15 is a solution, you substitute (replace) 15 in the equation.

Substitute 15 in for g:

`19-15=7`

Solve:

`4\\eq 7`

15 isn't a solution to the equation.

The only solution valid is when g = 12.

Substitute 12 in for g:

`19-12=7`

Solve:

`7=7`

Answer 2

NO

Explanation:

19 - g = 7 ( subtract 19 from both sides )

- g = - 12 ( multiply both sides by - 1 )

g = 12 ← is the only solution