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What is 4 3/5 - 2 1/3 ? I am a 5th grader, and I need your help! Please help ASAP.

 Feb 24, 2015

Best Answer 

 #2
avatar+150 
+8

This always helped me. Lets ignore the whole numbers until the very end so we end up with 3/5-1/3.

With adding and subtracting, you have to have the same denominator so what can we multiply to each denominator to make them the same. Usually you want the lowest number so you have less simplifying at the end. 

What we can do is 5*3 and 3*5. whatever you multiply the bottom with you have to multiply the top with, so 3*3 and 3*5 for the first one and it would come out as 9/15 and for the second one it would be 1*5 and 3*5 and it would come out as 5/15.

Your equation now is 9/15-5/15. For addition and subtraction you keep the denominator the same so you would only do 9-5=4

So your equation now is 4/15. Now go on to your whole numbers basically you just do 4-2=2

If you add those two solutions together you get 2 4/15

 Feb 24, 2015
 #1
avatar+128475 
+5

4 + 3/5  =  23/5    and

2 + 1/3 =   7/3     get a common denominator  = 15   ....so....

23/5 = 69/15     and

7/3 = 35/15

So

69/15 - 35/15 =

34/15

 

 Feb 24, 2015
 #2
avatar+150 
+8
Best Answer

This always helped me. Lets ignore the whole numbers until the very end so we end up with 3/5-1/3.

With adding and subtracting, you have to have the same denominator so what can we multiply to each denominator to make them the same. Usually you want the lowest number so you have less simplifying at the end. 

What we can do is 5*3 and 3*5. whatever you multiply the bottom with you have to multiply the top with, so 3*3 and 3*5 for the first one and it would come out as 9/15 and for the second one it would be 1*5 and 3*5 and it would come out as 5/15.

Your equation now is 9/15-5/15. For addition and subtraction you keep the denominator the same so you would only do 9-5=4

So your equation now is 4/15. Now go on to your whole numbers basically you just do 4-2=2

If you add those two solutions together you get 2 4/15

Anima Feb 24, 2015
 #3
avatar+128475 
0

Thaanks, Anima....!!!

 

 Feb 24, 2015
 #4
avatar
0

Hi, I know i am resonding a little late but i just learned this today because i am a 5th grader too so 4 3/5 - 2 1/3= 2 4/15 because you cannot subtract 4 3/5 into 2 1/3 so you would get a common denominator and then find out what you multiplied to get 15 as ur new denominator on the top and bottom of each fraction then in this case because it would now be 4 9/15 - 2 5/15 you can now subtract and ur final answer would be 2 4/15

smiley

 Mar 16, 2016
 #5
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0

help i need someone! what is 3 4/3 - 5 2/5? in fraction form

 Dec 13, 2016
 #6
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0

Thanks

 Mar 16, 2017

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