Question

3ч 9мин *6-8мин 7с *7

Answer 1

3ч 9мин=3*3600+9*60=11340сек
8мин 7 сек=8*60+7=487 сек
11340*6-487*7=64631 сек
64631 переводим в часы 17 часов 57 минут 11 сек

Answer 2

Calculation Breakdown

To solve the given expression, let's break it down step by step:

1. 3 hours 9 minutes: This can be represented as 3 hours * 60 minutes/hour + 9 minutes. 2. 6-8 minutes: This results in -2 minutes. 3. 7 seconds: This is simply 7 seconds.

Calculation

Now, let's perform the calculation:

1. 3 hours 9 minutes: 3 hours * 60 minutes/hour + 9 minutes = 189 minutes. 2. 6-8 minutes: -2 minutes. 3. 7 seconds: 7 seconds.

Now, let's add these together:

189 minutes - 2 minutes + 7 seconds = 187 minutes and 7 seconds.

Therefore, the result of the given expression "3 hours 9 minutes * 6-8 minutes + 7 seconds * 7" is 187 minutes and 7 seconds.