Subtract 24/81 from 81/90, Solve 81/90

Subtract 24/81 from 81/90

81/90 - 24/81 is 163/270.

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,
24/81 = 24 × 10/81 × 10 = 240/810
Subtract the two like fractions:
729/810 - 240/810 = 729 - 240/810 = 489/810
After reducing the fraction, the answer is 163/270

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