Add 20/5 and 30/81
1st number: 4 0/5, 2nd number: 30/81
20/5 + 30/81 is 118/27.
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,
30/81 = 30 × 5/81 × 5 = 150/405 - Add the two like fractions:
1620/405 + 150/405 = 1620 + 150/405 = 1770/405 - 1770/405 simplified gives 118/27
- So, 20/5 + 30/81 = 118/27
In mixed form: 410/27
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