Question 823840: The question is
6-4 1/5 they got 6=5 5/5
4 1/5 they got answer 1 4/5
My question is how did they get 6 to equal 5 5/5? The other one is 3-2 1/3 how do you turn 3 into a fraction?
Found 3 solutions by rfer, stanbon, KMST:
Answer by rfer(16322)   (Show Source):
You can put this solution on YOUR website! the fraction 5/5 is the same value as 1, because 5 divided by 5 equals 1.
the other way to do this problem is to use improper fractions.
30/5-21/5=9/5
9/5 reduced equals 1 4/5.
----------------
3-2 1/3
2 3/3-2 1/3=2/3
or
9/3-7/3=2/3
Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! The question is
6-4 1/5 they got 6=5 5/5
----
= 5+1 - 4 1/5
----
= 5-4 + 1-1/5
----
= 1 + 4/5
= 1 4/5
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The other one is 3-2 1/3 how do you turn 3 into a fraction?
-----
3 - 2 1/3
---=
(9/3)-(7/3)
----
= 2/3
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Cheers,
Stan H.
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Answer by KMST(5328)  (Show Source):
You can put this solution on YOUR website! That is a very convenient way of doing those calculations, but I would say that the way the numbers like  are written is unusual.
 and since 
 .
Everyone writes  as  ,
but I had never seen
 written as .
I would not call it wrong, but it is unusual.
That said, to subtract  from ,
you could subtract the  from the  to get  ,
and the  from the  to get  .
If someone writes  as  , I will think it is weird,
but I will not complain.
So the same person will probably write
One  is subtracted from the other,
and the  is subtracted from the  .
The way shown above is the way I do the calculations when I have to do them in my head.
The way I was taught to do that kind of calculation is harder.
The teacher would make us transform the both numbers into fractions with the same denominator.
Then we would subtract.
After that we would transform the fraction back into a mixed number if necessary.
So we would write
We were expected to transform in our heads, and sometimes we would make mistakes.
In our heads we had to do the following:
 ,  , and
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