Answers

Add 15/45 and 81/80

1^st number: 15/45, 2^nd number: 1 1/80

15/45 + 81/80 is 323/240.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 45 × 16 = 720,
   15/45 = 15 × 16/45 × 16 = 240/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   81/80 = 81 × 9/80 × 9 = 729/720
4. Add the two like fractions:
   240/720 + 729/720 = 240 + 729/720 = 969/720
5. 969/720 simplified gives 323/240
6. So, 15/45 + 81/80 = 323/240
   In mixed form: 183/240

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