Add 12/81 and 20/27
12/81 + 20/27 is 8/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 27 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 81 × 1 = 81,
12/81 = 12 × 1/81 × 1 = 12/81 - Likewise, for the 2nd fraction, since 27 × 3 = 81,
20/27 = 20 × 3/27 × 3 = 60/81 - Add the two like fractions:
12/81 + 60/81 = 12 + 60/81 = 72/81 - 72/81 simplified gives 8/9
- So, 12/81 + 20/27 = 8/9
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