Answers

Add 81/20 and 70/49

1^st number: 4 1/20, 2^nd number: 1 21/49

81/20 + 70/49 is 767/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 49 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 49 × 20 = 980,
   70/49 = 70 × 20/49 × 20 = 1400/980
4. Add the two like fractions:
   3969/980 + 1400/980 = 3969 + 1400/980 = 5369/980
5. 5369/980 simplified gives 767/140
6. So, 81/20 + 70/49 = 767/140
   In mixed form: 567/140

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