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andreyandreev [35.5K]
3 years ago
5

Math nation section 2

Mathematics
1 answer:
MrRa [10]3 years ago
6 0

Send the question?

Must click thanks and mark brainliest

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Help on both please ! Im a new student at this school and didn't learn this
larisa86 [58]
For the first one, you have to convert the fractions to an improper fraction. To do that you need to multiply the bottom denominator number (3) by the whole number (1) then you need to add the numinator, so 3x1+2= 5. You have to keep the denominator so 1 2/3 is equal to 5/3. Then do the same to 2 1/5, and you get 11/5. Now you have to find a common denominator, that's basically the smallest number that both numbers can go Into, the lowest common denominator for 3 and 5 is 15. So 3x5= 15, so we have to multiply the top number by 5 which is 25. So 5/3 is equal to 25/15, then 5x3= 15, so you need to multiply 11 by 3 which is 33. So 11/5 is equal to 33/15. Then you add them. Add the numinators (25+33=58. Then you keep the denominator 15. So when u add it it's 58/15 then you need to simplify that and you get 3 13/15.

The second one you turn them into improper fractions like I told you how to before (multiply the bottom number by the whole number then add he top number, then add he same denominator.) do that for both. Then you line them right next to each other and multiply across. (I just realized that they were the same number so they are equal to 5/3 and 11/5)
Then you do 5x11 and you get 55 then do 3x5 and you get 15. 55/15 is your answer, but you need to simplify it, you need to divide 55 by 15, (not all the way just the first number) so you do 15x3 and that's 45, then you subtract that from 55, and you get 10, so then you take your denominator (15) and you answer is 3 10/15. But when you simplify it it's 3 and 2/3


Hope I helped sorry it's so long and sorry for any typos it's so long I didn't go back and check
5 0
3 years ago
Solve 5x + x − 3x > −12
Svetllana [295]
X>-4 would be the correct answer
5 0
3 years ago
Which is the better buy twelve cans for7 dollors or 6 cans for 4 dollors
ValentinkaMS [17]

The better buy should be buy twelve cans for 7 dollors

Given that,

  • twelve cans for7 dollors or 6 cans for 4 dollors.

Based on the above information, the calculation is as follows:

The first option is

= 7\div 12

= $0.58

The second option

= 4\div 6

= $0.67

Learn more: brainly.com/question/16911495

6 0
2 years ago
Read 2 more answers
This goes out to the last post I made
Nitella [24]

Answer:

I-

Step-by-step explanation:

Well, those are certainly... interesting names?

8 0
2 years ago
Read 2 more answers
Tracey is counting all the change she has been saving in her car. She only collects silver coins and finds that she has eight le
Mademuasel [1]
Imma say i just took like 15 min doing this so when i did q20 d28 n36 i got 9.60 but when i did q19 d26 n34 i got 9.05 so pick your choice
3 0
3 years ago
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