Answers

Add 21/42 and 49/56

21/42 + 49/56 is 11/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 56 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 42 × 4 = 168,
   21/42 = 21 × 4/42 × 4 = 84/168
3. Likewise, for the 2nd fraction, since 56 × 3 = 168,
   49/56 = 49 × 3/56 × 3 = 147/168
4. Add the two like fractions:
   84/168 + 147/168 = 84 + 147/168 = 231/168
5. 231/168 simplified gives 11/8
6. So, 21/42 + 49/56 = 11/8
   In mixed form: 13/8

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