Subtract 81/98 from 4/90
4/90 - 81/98 is -3449/4410.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 98 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 90 × 49 = 4410,
4/90 = 4 × 49/90 × 49 = 196/4410 - Likewise, for the 2nd fraction, since 98 × 45 = 4410,
81/98 = 81 × 45/98 × 45 = 3645/4410 - Subtract the two like fractions:
196/4410 - 3645/4410 = 196 - 3645/4410 = -3449/4410
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