Answers

Add 81/21 and 50/56

1^st number: 3 18/21, 2^nd number: 50/56

81/21 + 50/56 is 19/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 56 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 21 × 8 = 168,
   81/21 = 81 × 8/21 × 8 = 648/168
3. Likewise, for the 2nd fraction, since 56 × 3 = 168,
   50/56 = 50 × 3/56 × 3 = 150/168
4. Add the two like fractions:
   648/168 + 150/168 = 648 + 150/168 = 798/168
5. 798/168 simplified gives 19/4
6. So, 81/21 + 50/56 = 19/4
   In mixed form: 43/4

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