Answers

Add 84/63 and 56/9

1^st number: 1 21/63, 2^nd number: 6 2/9

84/63 + 56/9 is 68/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 9 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 63 × 1 = 63,
   84/63 = 84 × 1/63 × 1 = 84/63
3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
   56/9 = 56 × 7/9 × 7 = 392/63
4. Add the two like fractions:
   84/63 + 392/63 = 84 + 392/63 = 476/63
5. 476/63 simplified gives 68/9
6. So, 84/63 + 56/9 = 68/9
   In mixed form: 75/9

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