Answers

Add 70/5 and 80/21

1^st number: 14 0/5, 2^nd number: 3 17/21

70/5 + 80/21 is 374/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 21 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 5 × 21 = 105,
   70/5 = 70 × 21/5 × 21 = 1470/105
3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
   80/21 = 80 × 5/21 × 5 = 400/105
4. Add the two like fractions:
   1470/105 + 400/105 = 1470 + 400/105 = 1870/105
5. 1870/105 simplified gives 374/21
6. So, 70/5 + 80/21 = 374/21
   In mixed form: 1717/21

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