Subtract 21/12 from 90/98
1st number: 90/98, 2nd number: 1 9/12
90/98 - 21/12 is -163/196.
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,
90/98 = 90 × 6/98 × 6 = 540/588 - Likewise, for the 2nd fraction, since 12 × 49 = 588,
21/12 = 21 × 49/12 × 49 = 1029/588 - Subtract the two like fractions:
540/588 - 1029/588 = 540 - 1029/588 = -489/588 - After reducing the fraction, the answer is -163/196
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