Subtract 21/54 from 16/49
16/49 - 21/54 is -55/882.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 54 is 2646
Next, find the equivalent fraction of both fractional numbers with denominator 2646 - For the 1st fraction, since 49 × 54 = 2646,
16/49 = 16 × 54/49 × 54 = 864/2646 - Likewise, for the 2nd fraction, since 54 × 49 = 2646,
21/54 = 21 × 49/54 × 49 = 1029/2646 - Subtract the two like fractions:
864/2646 - 1029/2646 = 864 - 1029/2646 = -165/2646 - After reducing the fraction, the answer is -55/882
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/49-21/54 16/49-42/54 16/98-21/54 48/49-21/54 16/49-63/54 80/49-21/54