Answers

Subtract 30/48 from 21/20

1^st number: 1 1/20, 2^nd number: 30/48

21/20 - 30/48 is 17/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 48 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 20 × 12 = 240,
   21/20 = 21 × 12/20 × 12 = 252/240
3. Likewise, for the 2nd fraction, since 48 × 5 = 240,
   30/48 = 30 × 5/48 × 5 = 150/240
4. Subtract the two like fractions:
   252/240 - 150/240 = 252 - 150/240 = 102/240
5. After reducing the fraction, the answer is 17/40

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