Question

За 7 одинаковых учебников и 5 однинаковых задачников заплатили 2 руб. 56 коп. Учебник дороже задачника на 4 копейки Сколько стоит каждая книга? решение уравнением!!! не целые числа не проходили ещё!!!

Answer 1

1) 4*(7-5)=82) 2,56-0,08=2,483)2,48/2=1,244)1,24-0,04=1,2(р)стоит задачник5)1,24+0,04=1,28(р)стоит ученик ......... 

Answer 2

To solve this problem, let's assign variables to the unknowns. Let's say the cost of each textbook is represented by 'x' and the cost of each workbook is represented by 'y'.

We are given the following information: - 7 identical textbooks and 5 identical workbooks were purchased for a total of 2 rubles and 56 kopeks. - The textbook is 4 kopeks more expensive than the workbook.

We can set