Answers

Add 81/20 and 56/98

1^st number: 4 1/20, 2^nd number: 56/98

81/20 + 56/98 is 647/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 98 is 980
   
   Next, find the equivalent fraction of both fractional numbers with denominator 980
2. For the 1st fraction, since 20 × 49 = 980,
   81/20 = 81 × 49/20 × 49 = 3969/980
3. Likewise, for the 2nd fraction, since 98 × 10 = 980,
   56/98 = 56 × 10/98 × 10 = 560/980
4. Add the two like fractions:
   3969/980 + 560/980 = 3969 + 560/980 = 4529/980
5. 4529/980 simplified gives 647/140
6. So, 81/20 + 56/98 = 647/140
   In mixed form: 487/140

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