Subtract 42/27 from 81/40
1st number: 2 1/40, 2nd number: 1 15/27
81/40 - 42/27 is 169/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 27 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 40 × 27 = 1080,
81/40 = 81 × 27/40 × 27 = 2187/1080 - Likewise, for the 2nd fraction, since 27 × 40 = 1080,
42/27 = 42 × 40/27 × 40 = 1680/1080 - Subtract the two like fractions:
2187/1080 - 1680/1080 = 2187 - 1680/1080 = 507/1080 - After reducing the fraction, the answer is 169/360
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