Answers

Add 80/30 and 72/15

1^st number: 2 20/30, 2^nd number: 4 12/15

80/30 + 72/15 is 112/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 15 is 30
   
   Next, find the equivalent fraction of both fractional numbers with denominator 30
2. For the 1st fraction, since 30 × 1 = 30,
   80/30 = 80 × 1/30 × 1 = 80/30
3. Likewise, for the 2nd fraction, since 15 × 2 = 30,
   72/15 = 72 × 2/15 × 2 = 144/30
4. Add the two like fractions:
   80/30 + 144/30 = 80 + 144/30 = 224/30
5. 224/30 simplified gives 112/15
6. So, 80/30 + 72/15 = 112/15
   In mixed form: 77/15

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