Add 20/5 and 18/81
1st number: 4 0/5, 2nd number: 18/81
20/5 + 18/81 is 38/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 5 × 81 = 405,
20/5 = 20 × 81/5 × 81 = 1620/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
18/81 = 18 × 5/81 × 5 = 90/405 - Add the two like fractions:
1620/405 + 90/405 = 1620 + 90/405 = 1710/405 - 1710/405 simplified gives 38/9
- So, 20/5 + 18/81 = 38/9
In mixed form: 42/9
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