Answers

Add 30/15 and 80/42

1^st number: 2 0/15, 2^nd number: 1 38/42

30/15 + 80/42 is 82/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 42 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 15 × 14 = 210,
   30/15 = 30 × 14/15 × 14 = 420/210
3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
   80/42 = 80 × 5/42 × 5 = 400/210
4. Add the two like fractions:
   420/210 + 400/210 = 420 + 400/210 = 820/210
5. 820/210 simplified gives 82/21
6. So, 30/15 + 80/42 = 82/21
   In mixed form: 319/21

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