Subtract 15/28 from 8/81
8/81 - 15/28 is -991/2268.
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,
8/81 = 8 × 28/81 × 28 = 224/2268 - Likewise, for the 2nd fraction, since 28 × 81 = 2268,
15/28 = 15 × 81/28 × 81 = 1215/2268 - Subtract the two like fractions:
224/2268 - 1215/2268 = 224 - 1215/2268 = -991/2268
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