Question

У игоря было х рублей. он купил 3 открытки по у рублей каждая . сколько денег у него осталось

Answer 1

х-3у

Ответ: у Игоря осталось х-3у рублей

Answer 2

Calculation of Remaining Money after Buying Postcards

To calculate the amount of money Igor has left after buying the postcards, we can use the following steps:

1. Initial Amount of Money: - Igor had x rubles.

2. Cost of Postcards: - Igor bought 3 postcards at y rubles each.

3. Calculation: - The total cost of the postcards is 3y rubles. - Igor's remaining money is the initial amount minus the total cost of the postcards, which is x - 3y rubles.

Conclusion

After buying 3 postcards at y rubles each, Igor has x - 3y rubles left.