Subtract 81/98 from 18/30
18/30 - 81/98 is -111/490.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 98 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 30 × 49 = 1470,
18/30 = 18 × 49/30 × 49 = 882/1470 - Likewise, for the 2nd fraction, since 98 × 15 = 1470,
81/98 = 81 × 15/98 × 15 = 1215/1470 - Subtract the two like fractions:
882/1470 - 1215/1470 = 882 - 1215/1470 = -333/1470 - After reducing the fraction, the answer is -111/490
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