Answers

Add 63/54 and 21/7

1^st number: 1 9/54, 2^nd number: 3 0/7

63/54 + 21/7 is 25/6.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 7 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 54 × 7 = 378,
   63/54 = 63 × 7/54 × 7 = 441/378
3. Likewise, for the 2nd fraction, since 7 × 54 = 378,
   21/7 = 21 × 54/7 × 54 = 1134/378
4. Add the two like fractions:
   441/378 + 1134/378 = 441 + 1134/378 = 1575/378
5. 1575/378 simplified gives 25/6
6. So, 63/54 + 21/7 = 25/6
   In mixed form: 41/6

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