Respuesta :
Answer:
He sold 6 books.
Step-by-step explanation:
If he sold a combination of 15 toys and books then the equation to find how many books he sold is the total minus how many toys he sold. 15-9=6
Answer:
He sold 6 books.
Step-by-step explanation:
If he sold a combination of 15 toys and books then the equation to find how many books he sold is the total minus how many toys he sold. 15-9=6