Answers

Add 81/45 and 18/15

1^st number: 1 36/45, 2^nd number: 1 3/15

81/45 + 18/15 is 3/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 15 is 45
   
   Next, find the equivalent fraction of both fractional numbers with denominator 45
2. For the 1st fraction, since 45 × 1 = 45,
   81/45 = 81 × 1/45 × 1 = 81/45
3. Likewise, for the 2nd fraction, since 15 × 3 = 45,
   18/15 = 18 × 3/15 × 3 = 54/45
4. Add the two like fractions:
   81/45 + 54/45 = 81 + 54/45 = 135/45
5. 135/45 simplified gives 3/1
6. So, 81/45 + 18/15 = 3/1

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