Answers

Add 45/21 and 54/18

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

45/21 + 54/18 is 36/7.

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,
   45/21 = 45 × 6/21 × 6 = 270/126
3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
   54/18 = 54 × 7/18 × 7 = 378/126
4. Add the two like fractions:
   270/126 + 378/126 = 270 + 378/126 = 648/126
5. 648/126 simplified gives 36/7
6. So, 45/21 + 54/18 = 36/7
   In mixed form: 51/7

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