Subtract 40/81 from 54/45
1st number: 1 9/45, 2nd number: 40/81
54/45 - 40/81 is 286/405.
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,
54/45 = 54 × 9/45 × 9 = 486/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
40/81 = 40 × 5/81 × 5 = 200/405 - Subtract the two like fractions:
486/405 - 200/405 = 486 - 200/405 = 286/405
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