Answers

Add 80/30 and 15/90

1^st number: 2 20/30, 2^nd number: 15/90

80/30 + 15/90 is 17/6.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 90 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 30 × 3 = 90,
   80/30 = 80 × 3/30 × 3 = 240/90
3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
   15/90 = 15 × 1/90 × 1 = 15/90
4. Add the two like fractions:
   240/90 + 15/90 = 240 + 15/90 = 255/90
5. 255/90 simplified gives 17/6
6. So, 80/30 + 15/90 = 17/6
   In mixed form: 25/6

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