Answers

Add 18/81 and 14/80

18/81 + 14/80 is 143/360.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 80 is 6480
   
   Next, find the equivalent fraction of both fractional numbers with denominator 6480
2. For the 1st fraction, since 81 × 80 = 6480,
   18/81 = 18 × 80/81 × 80 = 1440/6480
3. Likewise, for the 2nd fraction, since 80 × 81 = 6480,
   14/80 = 14 × 81/80 × 81 = 1134/6480
4. Add the two like fractions:
   1440/6480 + 1134/6480 = 1440 + 1134/6480 = 2574/6480
5. 2574/6480 simplified gives 143/360
6. So, 18/81 + 14/80 = 143/360

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