Add 15/81 and 20/54
15/81 + 20/54 is 5/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 54 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 81 × 2 = 162,
15/81 = 15 × 2/81 × 2 = 30/162 - Likewise, for the 2nd fraction, since 54 × 3 = 162,
20/54 = 20 × 3/54 × 3 = 60/162 - Add the two like fractions:
30/162 + 60/162 = 30 + 60/162 = 90/162 - 90/162 simplified gives 5/9
- So, 15/81 + 20/54 = 5/9
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