Add 21/50 and 20/81
21/50 + 20/81 is 2701/4050.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 81 is 4050
Next, find the equivalent fraction of both fractional numbers with denominator 4050 - For the 1st fraction, since 50 × 81 = 4050,
21/50 = 21 × 81/50 × 81 = 1701/4050 - Likewise, for the 2nd fraction, since 81 × 50 = 4050,
20/81 = 20 × 50/81 × 50 = 1000/4050 - Add the two like fractions:
1701/4050 + 1000/4050 = 1701 + 1000/4050 = 2701/4050 - So, 21/50 + 20/81 = 2701/4050
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