well its simple here is an example 3/8-2/8=1/8 you leave the denominator the same and 3-2=1
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Change the whole number into an improper fraction with the same denominator as the fraction and then subtract accordingly
First you would want to change the mixed number to an improper fraction. Then you can subtract
In the same way that you would answer a fraction subtract another fraction. The result could be either positive or negative, just as is the case with negative whole numbers.
Turn the proper fraction into an improper fraction.
You have to get common denominators and then subtract the biggest numerator (top number) by the smallest, you may have to cnacel the fraction down to get the smallest possible fraction