Subtract 42/49 from 20/12
1st number: 1 8/12, 2nd number: 42/49
20/12 - 42/49 is 17/21.
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,
20/12 = 20 × 49/12 × 49 = 980/588 - Likewise, for the 2nd fraction, since 49 × 12 = 588,
42/49 = 42 × 12/49 × 12 = 504/588 - Subtract the two like fractions:
980/588 - 504/588 = 980 - 504/588 = 476/588 - After reducing the fraction, the answer is 17/21
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