Answers

Add 12/18 and 2/21

12/18 + 2/21 is 16/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 21 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 18 × 7 = 126,
   12/18 = 12 × 7/18 × 7 = 84/126
3. Likewise, for the 2nd fraction, since 21 × 6 = 126,
   2/21 = 2 × 6/21 × 6 = 12/126
4. Add the two like fractions:
   84/126 + 12/126 = 84 + 12/126 = 96/126
5. 96/126 simplified gives 16/21
6. So, 12/18 + 2/21 = 16/21

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