Answers

Add 27/15 and 42/63

1^st number: 1 12/15, 2^nd number: 42/63

27/15 + 42/63 is 37/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 63 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 15 × 21 = 315,
   27/15 = 27 × 21/15 × 21 = 567/315
3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
   42/63 = 42 × 5/63 × 5 = 210/315
4. Add the two like fractions:
   567/315 + 210/315 = 567 + 210/315 = 777/315
5. 777/315 simplified gives 37/15
6. So, 27/15 + 42/63 = 37/15
   In mixed form: 27/15

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