Answers

Add 81/63 and 12/72

1^st number: 1 18/63, 2^nd number: 12/72

81/63 + 12/72 is 61/42.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 63 × 8 = 504,
   81/63 = 81 × 8/63 × 8 = 648/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   12/72 = 12 × 7/72 × 7 = 84/504
4. Add the two like fractions:
   648/504 + 84/504 = 648 + 84/504 = 732/504
5. 732/504 simplified gives 61/42
6. So, 81/63 + 12/72 = 61/42
   In mixed form: 119/42

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