Answers

Add 21/12 and 56/7

1^st number: 1 9/12, 2^nd number: 8 0/7

21/12 + 56/7 is 39/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 7 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 12 × 7 = 84,
   21/12 = 21 × 7/12 × 7 = 147/84
3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
   56/7 = 56 × 12/7 × 12 = 672/84
4. Add the two like fractions:
   147/84 + 672/84 = 147 + 672/84 = 819/84
5. 819/84 simplified gives 39/4
6. So, 21/12 + 56/7 = 39/4
   In mixed form: 93/4

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