first simplify to lowest terms, so the frist fraction is 4 3/5.
then we find least common denominator, so least common multiple of 5 and 4 is 20. we times first fraction by 4 and second by 5. thus we get 4 12/20 and 3 15/20
then we convert to improper fraction to get 4*20 + 12= 92
92/20 - 3 15/20
the second fraction is 3*20 + 15 = 75
so 92/20 - 75/20
so 92-75 = 17
so it is 17/20
4 6/10 - 3 3/4
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