You put the whole number over 1 then multiply so both fractions have the same denominator.
Example:
2- 1/2
2/1 -1/2
4/2 - 1/2 = 3/2 = 1 1/2
I’m not sure if this helped but I hope it did
The answer is either b or c
if ya asking for simpliicatio
remember that 
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