jaxon earns $30 each month he decides to give $5 to an animal charity he also decides to buy 3 books at a sale for $5 5 each

He has $10 left.

If he takes away $5 from the $30 to give to the animal charity he is left with $25. He then buys 3 books for $5 each, so you will multiply 3x5 giving you 15. So then you subtract $15 from $25 leaving you with $10