Answers

Add 35/15 and 81/80

1^st number: 2 5/15, 2^nd number: 1 1/80

35/15 + 81/80 is 803/240.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 80 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 15 × 16 = 240,
   35/15 = 35 × 16/15 × 16 = 560/240
3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
   81/80 = 81 × 3/80 × 3 = 243/240
4. Add the two like fractions:
   560/240 + 243/240 = 560 + 243/240 = 803/240
5. So, 35/15 + 81/80 = 803/240
   In mixed form: 383/240

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