Subtract 42/81 from 81/10
1st number: 8 1/10, 2nd number: 42/81
81/10 - 42/81 is 2047/270.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 10 × 81 = 810,
81/10 = 81 × 81/10 × 81 = 6561/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
42/81 = 42 × 10/81 × 10 = 420/810 - Subtract the two like fractions:
6561/810 - 420/810 = 6561 - 420/810 = 6141/810 - After reducing the fraction, the answer is 2047/270
- In mixed form: 7157/270
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