Answers

Subtract 5/20 from 25/21

1^st number: 1 4/21, 2^nd number: 5/20

25/21 - 5/20 is 79/84.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 20 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 21 × 20 = 420,
   25/21 = 25 × 20/21 × 20 = 500/420
3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
   5/20 = 5 × 21/20 × 21 = 105/420
4. Subtract the two like fractions:
   500/420 - 105/420 = 500 - 105/420 = 395/420
5. After reducing the fraction, the answer is 79/84

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