Answers

Subtract 1/42 from 81/60

1^st number: 1 21/60, 2^nd number: 1/42

81/60 - 1/42 is 557/420.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 42 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 60 × 7 = 420,
   81/60 = 81 × 7/60 × 7 = 567/420
3. Likewise, for the 2nd fraction, since 42 × 10 = 420,
   1/42 = 1 × 10/42 × 10 = 10/420
4. Subtract the two like fractions:
   567/420 - 10/420 = 567 - 10/420 = 557/420
5. In mixed form: 1137/420

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