Answers

Add 12/56 and 42/21

1^st number: 12/56, 2^nd number: 2 0/21

12/56 + 42/21 is 31/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 21 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 56 × 3 = 168,
   12/56 = 12 × 3/56 × 3 = 36/168
3. Likewise, for the 2nd fraction, since 21 × 8 = 168,
   42/21 = 42 × 8/21 × 8 = 336/168
4. Add the two like fractions:
   36/168 + 336/168 = 36 + 336/168 = 372/168
5. 372/168 simplified gives 31/14
6. So, 12/56 + 42/21 = 31/14
   In mixed form: 23/14

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