Найди значение выражения 2t/z - t/2z , если t =22,4 - 10,44, a z = 54 - 51,5

1. he is going to visit london.

2. she is going to stay at that hotel.

3. they are going to meet the group.

4. i am going to drive a car.

5. we are going to take an exam.

6. i am going to arrange everything.

7. my friends are going to help me.

8. my friend is going to spend the weekend in the country.

9. the boys are going to make a fire.

10. the student is going to study german.

а-b=с

где а - уменьшаемое, b - вычитаемое, с - значение разности

a, b - искомые числа

а-b=64,08

a - ? , в 4 разa > , чем b

b - ?  

решение:

a=4b

а-b=64,08

подставляем в уравнение

4b-b=64,08

3b=64,08

b=64,08: 3

b=21,36 - второе число.

a=4b=4·21,36=85,44 - первое число.

проверка: 85,44-21,36=64,08

ответ: 85,44 - уменьшаемое; 21,36 - вычитаемое.