Answers

Add 80/81 and 45/30

1^st number: 80/81, 2^nd number: 1 15/30

80/81 + 45/30 is 403/162.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 30 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 81 × 10 = 810,
   80/81 = 80 × 10/81 × 10 = 800/810
3. Likewise, for the 2nd fraction, since 30 × 27 = 810,
   45/30 = 45 × 27/30 × 27 = 1215/810
4. Add the two like fractions:
   800/810 + 1215/810 = 800 + 1215/810 = 2015/810
5. 2015/810 simplified gives 403/162
6. So, 80/81 + 45/30 = 403/162
   In mixed form: 279/162

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