Answers

Add 50/15 and 21/63

1^st number: 3 5/15, 2^nd number: 21/63

50/15 + 21/63 is 11/3.

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,
   50/15 = 50 × 21/15 × 21 = 1050/315
3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
   21/63 = 21 × 5/63 × 5 = 105/315
4. Add the two like fractions:
   1050/315 + 105/315 = 1050 + 105/315 = 1155/315
5. 1155/315 simplified gives 11/3
6. So, 50/15 + 21/63 = 11/3
   In mixed form: 32/3

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