Subtract 30/45 from 56/81
56/81 - 30/45 is 2/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 45 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 81 × 5 = 405,
56/81 = 56 × 5/81 × 5 = 280/405 - Likewise, for the 2nd fraction, since 45 × 9 = 405,
30/45 = 30 × 9/45 × 9 = 270/405 - Subtract the two like fractions:
280/405 - 270/405 = 280 - 270/405 = 10/405 - After reducing the fraction, the answer is 2/81
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