Multiplication and addition is that you buy a book you want to buy 150 baht for 2 books plus 50 plus 1501 is multiplication is 2 times 150 I returned is 2 books the price 300 baht.
Multiplication and addition is that you buy the book you want to buy two copies of 150 baht plus is 1501 plus 50 is 150 times 2 times I bristling Volume 2 is 300 baht.
Multiplication and addition is that you buy the book you want to buy? 150 baht 2 volume addition is 1501 plus 50 multiplication is 150คูณ 2 I results that is 2 book price 300 baht.