Subtract 90/27 from 81/24, Solve 3 9/24

Subtract 90/27 from 81/24

1^st number: 3 9/24, 2^nd number: 3 9/27

81/24 - 90/27 is 1/24.

Find the least common denominator or LCM of the two denominators:
LCM of 24 and 27 is 216

Next, find the equivalent fraction of both fractional numbers with denominator 216
For the 1st fraction, since 24 × 9 = 216,
81/24 = 81 × 9/24 × 9 = 729/216
Likewise, for the 2nd fraction, since 27 × 8 = 216,
90/27 = 90 × 8/27 × 8 = 720/216
Subtract the two like fractions:
729/216 - 720/216 = 729 - 720/216 = 9/216
After reducing the fraction, the answer is 1/24

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