Answers

Add 84/54 and 25/21

1^st number: 1 30/54, 2^nd number: 1 4/21

84/54 + 25/21 is 173/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 21 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 54 × 7 = 378,
   84/54 = 84 × 7/54 × 7 = 588/378
3. Likewise, for the 2nd fraction, since 21 × 18 = 378,
   25/21 = 25 × 18/21 × 18 = 450/378
4. Add the two like fractions:
   588/378 + 450/378 = 588 + 450/378 = 1038/378
5. 1038/378 simplified gives 173/63
6. So, 84/54 + 25/21 = 173/63
   In mixed form: 247/63

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