Subtract 5/49 from 42/84
42/84 - 5/49 is 39/98.
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,
42/84 = 42 × 7/84 × 7 = 294/588 - Likewise, for the 2nd fraction, since 49 × 12 = 588,
5/49 = 5 × 12/49 × 12 = 60/588 - Subtract the two like fractions:
294/588 - 60/588 = 294 - 60/588 = 234/588 - After reducing the fraction, the answer is 39/98
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/84-10/49 42/84-5/98 42/84-15/49 42/84-25/49 42/84-35/49