Subtract 81/12 from 21/98
1st number: 21/98, 2nd number: 6 9/12
21/98 - 81/12 is -183/28.
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,
81/12 = 81 × 49/12 × 49 = 3969/588 - Subtract the two like fractions:
126/588 - 3969/588 = 126 - 3969/588 = -3843/588 - After reducing the fraction, the answer is -183/28
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