Answers

Subtract 21/48 from 42/30

1^st number: 1 12/30, 2^nd number: 21/48

42/30 - 21/48 is 77/80.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 48 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 30 × 8 = 240,
   42/30 = 42 × 8/30 × 8 = 336/240
3. Likewise, for the 2nd fraction, since 48 × 5 = 240,
   21/48 = 21 × 5/48 × 5 = 105/240
4. Subtract the two like fractions:
   336/240 - 105/240 = 336 - 105/240 = 231/240
5. After reducing the fraction, the answer is 77/80

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