Answers

Subtract 1/72 from 80/42

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

80/42 - 1/72 is 953/504.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 42 × 12 = 504,
   80/42 = 80 × 12/42 × 12 = 960/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   1/72 = 1 × 7/72 × 7 = 7/504
4. Subtract the two like fractions:
   960/504 - 7/504 = 960 - 7/504 = 953/504
5. In mixed form: 1449/504

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