Answers

Subtract 90/7 from 54/60

1^st number: 54/60, 2^nd number: 12 6/7

54/60 - 90/7 is -837/70.

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,
   54/60 = 54 × 7/60 × 7 = 378/420
3. Likewise, for the 2nd fraction, since 7 × 60 = 420,
   90/7 = 90 × 60/7 × 60 = 5400/420
4. Subtract the two like fractions:
   378/420 - 5400/420 = 378 - 5400/420 = -5022/420
5. After reducing the fraction, the answer is -837/70

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