Answers

Subtract 15/54 from 42/15

1^st number: 2 12/15, 2^nd number: 15/54

42/15 - 15/54 is 227/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 54 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 15 × 18 = 270,
   42/15 = 42 × 18/15 × 18 = 756/270
3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
   15/54 = 15 × 5/54 × 5 = 75/270
4. Subtract the two like fractions:
   756/270 - 75/270 = 756 - 75/270 = 681/270
5. After reducing the fraction, the answer is 227/90
6. In mixed form: 247/90

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