Subtract 20/49 from 3/27
3/27 - 20/49 is -131/441.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 49 is 1323
Next, find the equivalent fraction of both fractional numbers with denominator 1323 - For the 1st fraction, since 27 × 49 = 1323,
3/27 = 3 × 49/27 × 49 = 147/1323 - Likewise, for the 2nd fraction, since 49 × 27 = 1323,
20/49 = 20 × 27/49 × 27 = 540/1323 - Subtract the two like fractions:
147/1323 - 540/1323 = 147 - 540/1323 = -393/1323 - After reducing the fraction, the answer is -131/441
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/27-20/49 3/27-40/49 3/54-20/49 3/27-20/98 9/27-20/49 3/27-60/49 3/81-20/49 15/27-20/49 21/27-20/49