Subtract 21/27 from 16/49
16/49 - 21/27 is -199/441.
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,
16/49 = 16 × 27/49 × 27 = 432/1323 - Likewise, for the 2nd fraction, since 27 × 49 = 1323,
21/27 = 21 × 49/27 × 49 = 1029/1323 - Subtract the two like fractions:
432/1323 - 1029/1323 = 432 - 1029/1323 = -597/1323 - After reducing the fraction, the answer is -199/441
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/49-21/27 16/49-42/27 16/98-21/27 16/49-21/54 48/49-21/27 16/49-63/27 16/49-21/81 80/49-21/27