Dividing Mixed Numbers

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Example 1 Simple Mixed Number Division

 1

 3

 2

1
 

 ---

 /

 ---

 =

 ---

5
 

10
 

Both mixed numbers must be changed to improper fractions.

1 and 3/5 would be 8/5 as an improper fraction.

2 and 1/10 would be 21/10 as an improper fraction.

8 / 21  
--- ---  =  ---
5 / 10  

Now you have both mixed numbers as improper fractions. You will need to change the problem to a multiplication problem. You will also need to use the reciprocal of the second fraction (divisor).

8   10  
--- x ---  =  ---
5 21  

Now you should try to cancel. Divide the first denominator and the second numerator by 5. This will save you from having to reduce later.

8   2   16
--- x ---  =  ---
1 21   21

Your answer of 16/21 is proper and in lowest terms because the only thing that divides into both the numerator and denominator is the number 1.

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