Subtract 20/49 from 3/84
3/84 - 20/49 is -73/196.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 49 is 588
Next, find the equivalent fraction of both fractional numbers with denominator 588 - For the 1st fraction, since 84 × 7 = 588,
3/84 = 3 × 7/84 × 7 = 21/588 - Likewise, for the 2nd fraction, since 49 × 12 = 588,
20/49 = 20 × 12/49 × 12 = 240/588 - Subtract the two like fractions:
21/588 - 240/588 = 21 - 240/588 = -219/588 - After reducing the fraction, the answer is -73/196
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