Answers

Add 49/21 and 18/80

1^st number: 2 7/21, 2^nd number: 18/80

49/21 + 18/80 is 307/120.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 80 is 1680
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1680
2. For the 1st fraction, since 21 × 80 = 1680,
   49/21 = 49 × 80/21 × 80 = 3920/1680
3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
   18/80 = 18 × 21/80 × 21 = 378/1680
4. Add the two like fractions:
   3920/1680 + 378/1680 = 3920 + 378/1680 = 4298/1680
5. 4298/1680 simplified gives 307/120
6. So, 49/21 + 18/80 = 307/120
   In mixed form: 267/120

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