Answers

Add 42/15 and 28/63

1^st number: 2 12/15, 2^nd number: 28/63

42/15 + 28/63 is 146/45.

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,
   42/15 = 42 × 21/15 × 21 = 882/315
3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
   28/63 = 28 × 5/63 × 5 = 140/315
4. Add the two like fractions:
   882/315 + 140/315 = 882 + 140/315 = 1022/315
5. 1022/315 simplified gives 146/45
6. So, 42/15 + 28/63 = 146/45
   In mixed form: 311/45

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