Answers

Subtract 21/72 from 70/21

1^st number: 3 7/21, 2^nd number: 21/72

70/21 - 21/72 is 73/24.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 21 × 24 = 504,
   70/21 = 70 × 24/21 × 24 = 1680/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   21/72 = 21 × 7/72 × 7 = 147/504
4. Subtract the two like fractions:
   1680/504 - 147/504 = 1680 - 147/504 = 1533/504
5. After reducing the fraction, the answer is 73/24
6. In mixed form: 31/24

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