Subtract 15/81 from 20/50
20/50 - 15/81 is 29/135.
Steps for subtracting 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,
20/50 = 20 × 81/50 × 81 = 1620/4050 - Likewise, for the 2nd fraction, since 81 × 50 = 4050,
15/81 = 15 × 50/81 × 50 = 750/4050 - Subtract the two like fractions:
1620/4050 - 750/4050 = 1620 - 750/4050 = 870/4050 - After reducing the fraction, the answer is 29/135
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