Answers

Add 81/25 and 21/63

1^st number: 3 6/25, 2^nd number: 21/63

81/25 + 21/63 is 268/75.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 63 is 1575
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1575
2. For the 1st fraction, since 25 × 63 = 1575,
   81/25 = 81 × 63/25 × 63 = 5103/1575
3. Likewise, for the 2nd fraction, since 63 × 25 = 1575,
   21/63 = 21 × 25/63 × 25 = 525/1575
4. Add the two like fractions:
   5103/1575 + 525/1575 = 5103 + 525/1575 = 5628/1575
5. 5628/1575 simplified gives 268/75
6. So, 81/25 + 21/63 = 268/75
   In mixed form: 343/75

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