Subtract 21/27 from 4/49
4/49 - 21/27 is -307/441.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 27 is 1323
Next, find the equivalent fraction of both fractional numbers with denominator 1323 - For the 1st fraction, since 49 × 27 = 1323,
4/49 = 4 × 27/49 × 27 = 108/1323 - Likewise, for the 2nd fraction, since 27 × 49 = 1323,
21/27 = 21 × 49/27 × 49 = 1029/1323 - Subtract the two like fractions:
108/1323 - 1029/1323 = 108 - 1029/1323 = -921/1323 - After reducing the fraction, the answer is -307/441
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/49-21/27 4/49-42/27 4/98-21/27 4/49-21/54 12/49-21/27 4/49-63/27 4/49-21/81 20/49-21/27 28/49-21/27