Add 1/20 and 2/81
1/20 + 2/81 is 121/1620.
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,
1/20 = 1 × 81/20 × 81 = 81/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
2/81 = 2 × 20/81 × 20 = 40/1620 - Add the two like fractions:
81/1620 + 40/1620 = 81 + 40/1620 = 121/1620 - So, 1/20 + 2/81 = 121/1620
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