Subtract 3/90 from 8/81
8/81 - 3/90 is 53/810.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 90 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 81 × 10 = 810,
8/81 = 8 × 10/81 × 10 = 80/810 - Likewise, for the 2nd fraction, since 90 × 9 = 810,
3/90 = 3 × 9/90 × 9 = 27/810 - Subtract the two like fractions:
80/810 - 27/810 = 80 - 27/810 = 53/810
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