Answers

Add 9/12 and 8/21

9/12 + 8/21 is 95/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 21 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 12 × 7 = 84,
   9/12 = 9 × 7/12 × 7 = 63/84
3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
   8/21 = 8 × 4/21 × 4 = 32/84
4. Add the two like fractions:
   63/84 + 32/84 = 63 + 32/84 = 95/84
5. So, 9/12 + 8/21 = 95/84
   In mixed form: 111/84

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