Answers

Subtract 15/36 from 72/42

1^st number: 1 30/42, 2^nd number: 15/36

72/42 - 15/36 is 109/84.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 36 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 42 × 6 = 252,
   72/42 = 72 × 6/42 × 6 = 432/252
3. Likewise, for the 2nd fraction, since 36 × 7 = 252,
   15/36 = 15 × 7/36 × 7 = 105/252
4. Subtract the two like fractions:
   432/252 - 105/252 = 432 - 105/252 = 327/252
5. After reducing the fraction, the answer is 109/84
6. In mixed form: 125/84

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