Answers

Add 15/9 and 70/80

1^st number: 1 6/9, 2^nd number: 70/80

15/9 + 70/80 is 61/24.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 9 × 80 = 720,
   15/9 = 15 × 80/9 × 80 = 1200/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   70/80 = 70 × 9/80 × 9 = 630/720
4. Add the two like fractions:
   1200/720 + 630/720 = 1200 + 630/720 = 1830/720
5. 1830/720 simplified gives 61/24
6. So, 15/9 + 70/80 = 61/24
   In mixed form: 213/24

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