Add 12/20 and 20/81
12/20 + 20/81 is 343/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 81 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 20 × 81 = 1620,
12/20 = 12 × 81/20 × 81 = 972/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
20/81 = 20 × 20/81 × 20 = 400/1620 - Add the two like fractions:
972/1620 + 400/1620 = 972 + 400/1620 = 1372/1620 - 1372/1620 simplified gives 343/405
- So, 12/20 + 20/81 = 343/405
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