Answers

Subtract 80/42 from 60/72

1^st number: 60/72, 2^nd number: 1 38/42

60/72 - 80/42 is -15/14.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 42 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 72 × 7 = 504,
   60/72 = 60 × 7/72 × 7 = 420/504
3. Likewise, for the 2nd fraction, since 42 × 12 = 504,
   80/42 = 80 × 12/42 × 12 = 960/504
4. Subtract the two like fractions:
   420/504 - 960/504 = 420 - 960/504 = -540/504
5. After reducing the fraction, the answer is -15/14

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