Subtract 40/27 from 81/20
1st number: 4 1/20, 2nd number: 1 13/27
81/20 - 40/27 is 1387/540.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 27 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
81/20 = 81 × 27/20 × 27 = 2187/540 - Likewise, for the 2nd fraction, since 27 × 20 = 540,
40/27 = 40 × 20/27 × 20 = 800/540 - Subtract the two like fractions:
2187/540 - 800/540 = 2187 - 800/540 = 1387/540 - In mixed form: 2307/540
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