Question

What should be done to both sides of the equation in order to solve w - 9 = 15?

Add 15.
Subtract 15.
Add 9 1/2.
Subtract 9 1/2.

Answer 1

Add 9

Explanation:

Adding 9 to both sides would isolate 'w'.

`w-9=15\\\\w-9+9=15+9\\\\w=24`

Hope this helps.

EXTRA NOTE:

According to the answer choices, if the equation was
`w-9.5=15`, it would of been adding 9.5 to both sides.

`w-9.5=15\\\\w-9.5+9.5=15+9.5\\\\w=24.5`