Subtract 10/12 from 21/98
21/98 - 10/12 is -13/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 12 is 588
Next, find the equivalent fraction of both fractional numbers with denominator 588 - For the 1st fraction, since 98 × 6 = 588,
21/98 = 21 × 6/98 × 6 = 126/588 - Likewise, for the 2nd fraction, since 12 × 49 = 588,
10/12 = 10 × 49/12 × 49 = 490/588 - Subtract the two like fractions:
126/588 - 490/588 = 126 - 490/588 = -364/588 - After reducing the fraction, the answer is -13/21
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