Answers

Subtract 70/81 from 56/20

1^st number: 2 16/20, 2^nd number: 70/81

56/20 - 70/81 is 784/405.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 81 is 1620
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1620
2. For the 1st fraction, since 20 × 81 = 1620,
   56/20 = 56 × 81/20 × 81 = 4536/1620
3. Likewise, for the 2nd fraction, since 81 × 20 = 1620,
   70/81 = 70 × 20/81 × 20 = 1400/1620
4. Subtract the two like fractions:
   4536/1620 - 1400/1620 = 4536 - 1400/1620 = 3136/1620
5. After reducing the fraction, the answer is 784/405
6. In mixed form: 1379/405

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