Subtract 9/28 from 4/81
4/81 - 9/28 is -617/2268.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 28 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 81 × 28 = 2268,
4/81 = 4 × 28/81 × 28 = 112/2268 - Likewise, for the 2nd fraction, since 28 × 81 = 2268,
9/28 = 9 × 81/28 × 81 = 729/2268 - Subtract the two like fractions:
112/2268 - 729/2268 = 112 - 729/2268 = -617/2268
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