Subtract 80/10 from 10/81
1st number: 10/81, 2nd number: 8 0/10
10/81 - 80/10 is -638/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 10 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 81 × 10 = 810,
10/81 = 10 × 10/81 × 10 = 100/810 - Likewise, for the 2nd fraction, since 10 × 81 = 810,
80/10 = 80 × 81/10 × 81 = 6480/810 - Subtract the two like fractions:
100/810 - 6480/810 = 100 - 6480/810 = -6380/810 - After reducing the fraction, the answer is -638/81
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