Answers

Subtract 20/56 from 72/15

1^st number: 4 12/15, 2^nd number: 20/56

72/15 - 20/56 is 311/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 56 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 15 × 56 = 840,
   72/15 = 72 × 56/15 × 56 = 4032/840
3. Likewise, for the 2nd fraction, since 56 × 15 = 840,
   20/56 = 20 × 15/56 × 15 = 300/840
4. Subtract the two like fractions:
   4032/840 - 300/840 = 4032 - 300/840 = 3732/840
5. After reducing the fraction, the answer is 311/70
6. In mixed form: 431/70

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