Answers

Add 84/63 and 7/72

1^st number: 1 21/63, 2^nd number: 7/72

84/63 + 7/72 is 103/72.

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,
   84/63 = 84 × 8/63 × 8 = 672/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   7/72 = 7 × 7/72 × 7 = 49/504
4. Add the two like fractions:
   672/504 + 49/504 = 672 + 49/504 = 721/504
5. 721/504 simplified gives 103/72
6. So, 84/63 + 7/72 = 103/72
   In mixed form: 131/72

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