Answers

Subtract 20/27 from 42/15

1^st number: 2 12/15, 2^nd number: 20/27

42/15 - 20/27 is 278/135.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 27 is 135
   
   Next, find the equivalent fraction of both fractional numbers with denominator 135
2. For the 1st fraction, since 15 × 9 = 135,
   42/15 = 42 × 9/15 × 9 = 378/135
3. Likewise, for the 2nd fraction, since 27 × 5 = 135,
   20/27 = 20 × 5/27 × 5 = 100/135
4. Subtract the two like fractions:
   378/135 - 100/135 = 378 - 100/135 = 278/135
5. In mixed form: 28/135

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