Answers

Subtract 90/56 from 72/60

1^st number: 1 12/60, 2^nd number: 1 34/56

72/60 - 90/56 is -57/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 56 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 60 × 14 = 840,
   72/60 = 72 × 14/60 × 14 = 1008/840
3. Likewise, for the 2nd fraction, since 56 × 15 = 840,
   90/56 = 90 × 15/56 × 15 = 1350/840
4. Subtract the two like fractions:
   1008/840 - 1350/840 = 1008 - 1350/840 = -342/840
5. After reducing the fraction, the answer is -57/140

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