Answers

Add 84/35 and 18/80

1^st number: 2 14/35, 2^nd number: 18/80

84/35 + 18/80 is 21/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 35 × 16 = 560,
   84/35 = 84 × 16/35 × 16 = 1344/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   18/80 = 18 × 7/80 × 7 = 126/560
4. Add the two like fractions:
   1344/560 + 126/560 = 1344 + 126/560 = 1470/560
5. 1470/560 simplified gives 21/8
6. So, 84/35 + 18/80 = 21/8
   In mixed form: 25/8

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