Subtract 21/54 from 7/60
7/60 - 21/54 is -49/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 54 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 60 × 9 = 540,
7/60 = 7 × 9/60 × 9 = 63/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
21/54 = 21 × 10/54 × 10 = 210/540 - Subtract the two like fractions:
63/540 - 210/540 = 63 - 210/540 = -147/540 - After reducing the fraction, the answer is -49/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/60-21/54 7/60-42/54 21/60-21/54 7/60-63/54 35/60-21/54 49/60-21/54