Subtract 16/81 from 81/90
81/90 - 16/81 is 569/810.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 90 × 9 = 810,
81/90 = 81 × 9/90 × 9 = 729/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
16/81 = 16 × 10/81 × 10 = 160/810 - Subtract the two like fractions:
729/810 - 160/810 = 729 - 160/810 = 569/810
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