Answers

Add 81/80 and 35/28

1^st number: 1 1/80, 2^nd number: 1 7/28

81/80 + 35/28 is 181/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 28 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 80 × 7 = 560,
   81/80 = 81 × 7/80 × 7 = 567/560
3. Likewise, for the 2nd fraction, since 28 × 20 = 560,
   35/28 = 35 × 20/28 × 20 = 700/560
4. Add the two like fractions:
   567/560 + 700/560 = 567 + 700/560 = 1267/560
5. 1267/560 simplified gives 181/80
6. So, 81/80 + 35/28 = 181/80
   In mixed form: 221/80

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