Multiplication and addition is that you buy a book, play 150 baht/do you want to buy 2 books plus is 150 150 150 2 x is multiplied when I return is 2 books the price 300 baht.
Multiplication and addition is that you buy the book you want to play at 150 baht plus two copies of the 150 150 150x2 multiplication is bristling hair is Volume 2 300 baht.
Multiplication and addition is that you buy the book around 150) you want to buy the book, 2 additive is 150 150 multiplication is 150x2 I results that is 2 book price 300 baht.