Answers

Subtract 15/72 from 42/15

1^st number: 2 12/15, 2^nd number: 15/72

42/15 - 15/72 is 311/120.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 15 × 24 = 360,
   42/15 = 42 × 24/15 × 24 = 1008/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   15/72 = 15 × 5/72 × 5 = 75/360
4. Subtract the two like fractions:
   1008/360 - 75/360 = 1008 - 75/360 = 933/360
5. After reducing the fraction, the answer is 311/120
6. In mixed form: 271/120

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