Subtract 40/49 from 3/84
3/84 - 40/49 is -153/196.
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,
40/49 = 40 × 12/49 × 12 = 480/588 - Subtract the two like fractions:
21/588 - 480/588 = 21 - 480/588 = -459/588 - After reducing the fraction, the answer is -153/196
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/84-40/49 3/84-80/49 3/84-40/98 9/84-40/49 15/84-40/49 21/84-40/49