Answers

Add 21/54 and 45/7

1^st number: 21/54, 2^nd number: 6 3/7

21/54 + 45/7 is 859/126.

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,
   21/54 = 21 × 7/54 × 7 = 147/378
3. Likewise, for the 2nd fraction, since 7 × 54 = 378,
   45/7 = 45 × 54/7 × 54 = 2430/378
4. Add the two like fractions:
   147/378 + 2430/378 = 147 + 2430/378 = 2577/378
5. 2577/378 simplified gives 859/126
6. So, 21/54 + 45/7 = 859/126
   In mixed form: 6103/126

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