Answers

Add 84/63 and 21/54

1^st number: 1 21/63, 2^nd number: 21/54

84/63 + 21/54 is 31/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 63 × 6 = 378,
   84/63 = 84 × 6/63 × 6 = 504/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   21/54 = 21 × 7/54 × 7 = 147/378
4. Add the two like fractions:
   504/378 + 147/378 = 504 + 147/378 = 651/378
5. 651/378 simplified gives 31/18
6. So, 84/63 + 21/54 = 31/18
   In mixed form: 113/18

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