Subtract 3/81 from 56/45
1st number: 1 11/45, 2nd number: 3/81
56/45 - 3/81 is 163/135.
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,
56/45 = 56 × 9/45 × 9 = 504/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
3/81 = 3 × 5/81 × 5 = 15/405 - Subtract the two like fractions:
504/405 - 15/405 = 504 - 15/405 = 489/405 - After reducing the fraction, the answer is 163/135
- In mixed form: 128/135
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