Subtract 10/81 from 2/45
2/45 - 10/81 is -32/405.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 45 × 9 = 405,
2/45 = 2 × 9/45 × 9 = 18/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
10/81 = 10 × 5/81 × 5 = 50/405 - Subtract the two like fractions:
18/405 - 50/405 = 18 - 50/405 = -32/405
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