Answers

Add 27/21 and 54/18

1^st number: 1 6/21, 2^nd number: 3 0/18

27/21 + 54/18 is 30/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 18 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 21 × 6 = 126,
   27/21 = 27 × 6/21 × 6 = 162/126
3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
   54/18 = 54 × 7/18 × 7 = 378/126
4. Add the two like fractions:
   162/126 + 378/126 = 162 + 378/126 = 540/126
5. 540/126 simplified gives 30/7
6. So, 27/21 + 54/18 = 30/7
   In mixed form: 42/7

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