Answer:
$17 and $3
Step-by-step explanation:
He had $ 5 right, he spent 12 so just add 12. Work backwards. Bella spent 12 dollars on 3 packs because 3 packs * $4 = 12. Hope this makes sense. You just want to use the inverse operation.
or
1. x - 12 = 5. x = 17
2. 4x = 12. x = 3
