Question

4ч 57 мин+2 ч 17 мин - 3ч 29 мин= 18мин 9с - 7мин 46с + 48мин 35 с = 7кг 300г - 940г= 24км- 8км 950м= помогите пожалуйста решить

Answer 1

1) 297мин+137мин-209мин=225мин=3ч, 45мин    
2) 1089c-466c+2915c=3538c=58мин, 58с
3) 7300г-940г=6360г=6кг, 360г
4) 24000м-8950м=15015м=15 км,15м

Answer 2

Легче всего это превращение часы в минуты.

4 ч. 58 мин. + 2 ч. 17 мин. - 3 ч. 29 мин. = 240 мин. + 58 мин. + 120 мин. + 17 мин. - 180 ч. 29 мин. = 435 мин. - 180 мин. - 29 мин. = 226 мин. = 3 ч. 46 мин.

 

А здесь легче минуты в секунлы перевести:

18мин 9с-7мин 46с+48мин 35с = 1080 с. + 9 с. - 420 с. - 46 с. + 2880 с. + 35с. = 3538 с. = 58 мин. 58с.

Answer 3

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

1. Adding Time: - 4 hours 57 minutes + 2 hours 17 minutes - 3 hours 29 minutes - To add the hours, we have 4 hours + 2 hours - 3 hours = 3 hours - To add the minutes, we have 57 minutes + 17 minutes - 29 minutes = 45 minutes - Therefore, the total time is 3 hours 45 minutes.

2. Subtracting Time: - 18 minutes 9 seconds - 7 minutes 46 seconds - To subtract the minutes, we have 18 minutes - 7 minutes = 11 minutes - To subtract the seconds, we have 9 seconds - 46 seconds = -37 seconds (since we can't have negative seconds, we borrow 1 minute from the minutes) - Therefore, the total time is 11 minutes - 1 minute = 10 minutes 23 seconds.

3. Adding Time: - 48 minutes 35 seconds + 7 kilograms 300 grams - 940 grams - To add the minutes, we have 48 minutes + 7 kilograms = 48 minutes (since we can't add minutes and kilograms) - To add the seconds, we have 35 seconds + 300 grams - 940 grams = 35 seconds - 640 grams (since we can't add seconds and grams, we borrow 1 kilogram from the kilograms) - Therefore, the total time is 48 minutes - 1 kilogram = 48 minutes - 1,000 grams = 47 minutes 360 grams.

4. Subtracting Distance: - 24 kilometers - 8 kilometers 950 meters - To subtract the kilometers, we have 24 kilometers - 8 kilometers = 16 kilometers - To subtract the meters, we have 950 meters = 0.95 kilometers - Therefore, the total distance is 16 kilometers - 0.95 kilometers = 15.05 kilometers.

So, the solution to the given equation is: - Time: 3 hours 45 minutes + 10 minutes 23 seconds + 47 minutes 360 grams - Distance: 15.05 kilometers.

I hope this helps! Let me know if you have any further questions.