Respuesta :
2+3+4x=99
9x=99
x=11
2 times 11=22
3 times 11=33
4 times 11=44
So the amount of books in each group is 22 books, 33 books, and 44 books.
9x=99
x=11
2 times 11=22
3 times 11=33
4 times 11=44
So the amount of books in each group is 22 books, 33 books, and 44 books.