Subtract 42/27 from 81/10
1st number: 8 1/10, 2nd number: 1 15/27
81/10 - 42/27 is 589/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 10 × 27 = 270,
81/10 = 81 × 27/10 × 27 = 2187/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
42/27 = 42 × 10/27 × 10 = 420/270 - Subtract the two like fractions:
2187/270 - 420/270 = 2187 - 420/270 = 1767/270 - After reducing the fraction, the answer is 589/90
- In mixed form: 649/90
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