Answers

Subtract 20/56 from 72/45

1^st number: 1 27/45, 2^nd number: 20/56

72/45 - 20/56 is 87/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 56 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 45 × 56 = 2520,
   72/45 = 72 × 56/45 × 56 = 4032/2520
3. Likewise, for the 2nd fraction, since 56 × 45 = 2520,
   20/56 = 20 × 45/56 × 45 = 900/2520
4. Subtract the two like fractions:
   4032/2520 - 900/2520 = 4032 - 900/2520 = 3132/2520
5. After reducing the fraction, the answer is 87/70
6. In mixed form: 117/70

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