Question

В баке машины было 40 л бензина.на поездку за город пошло 15л, а на поездку в театр -5 л.объясни ,что обозначает выражение15+5;40-15;40-(15+5).

Answer 1

15+5=20(л)-пошло бензина на поездку в город и театр всего
40-15=25(л)-осталось бензина после поездки в город
40-(15+5)=20(л)-всего осталось бензина

Answer 2

1) 15+5=20(л) потратили на поездку за город и в театр вместе
2) 40-15= 25 (л) осталось после поездки за город
3) 40-(15+5)= 20 (л) осталось после поездки за город и в театр

Answer 3

Explanation of the Expressions

The expressions given are: 15+5; 40-15; 40-(15+5). Let's break down what each of these expressions represents.

1. 15+5: - This expression represents the total amount of fuel used for both trips: the trip out of town and the trip to the theater.

2. 40-15: - This expression represents the amount of fuel left in the tank after the trip out of town.

3. 40-(15+5): - This expression represents the amount of fuel left in the tank after both trips, considering the fuel used for both the out-of-town trip and the trip to the theater.

Calculation of the Expressions

Now, let's calculate the values of these expressions based on the given information.

1. 15+5: - The total amount of fuel used for both trips is 15 liters for the out-of-town trip and 5 liters for the trip to the theater. Therefore, 15+5 equals 20.

2. 40-15: - The amount of fuel left in the tank after the trip out of town is 40 liters initially in the tank minus 15 liters used, which equals 25 liters.

3. 40-(15+5): - The amount of fuel left in the tank after both trips, considering the fuel used for both the out-of-town trip and the trip to the theater, is 40 liters initially in the tank minus (15+5) liters used, which equals 20 liters.

Conclusion

So, the values of the given expressions are: - 15+5 = 20 - 40-15 = 25 - 40-(15+5) = 20