Subtract 21/49 from 3/12
3/12 - 21/49 is -5/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 49 is 588
Next, find the equivalent fraction of both fractional numbers with denominator 588 - For the 1st fraction, since 12 × 49 = 588,
3/12 = 3 × 49/12 × 49 = 147/588 - Likewise, for the 2nd fraction, since 49 × 12 = 588,
21/49 = 21 × 12/49 × 12 = 252/588 - Subtract the two like fractions:
147/588 - 252/588 = 147 - 252/588 = -105/588 - After reducing the fraction, the answer is -5/28
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