Answers

Subtract 63/7 from 81/60

1^st number: 1 21/60, 2^nd number: 9 0/7

81/60 - 63/7 is -153/20.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 7 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 7 × 60 = 420,
   63/7 = 63 × 60/7 × 60 = 3780/420
4. Subtract the two like fractions:
   567/420 - 3780/420 = 567 - 3780/420 = -3213/420
5. After reducing the fraction, the answer is -153/20

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