Subtract 21/60 from 20/75
20/75 - 21/60 is -1/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 60 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 75 × 4 = 300,
20/75 = 20 × 4/75 × 4 = 80/300 - Likewise, for the 2nd fraction, since 60 × 5 = 300,
21/60 = 21 × 5/60 × 5 = 105/300 - Subtract the two like fractions:
80/300 - 105/300 = 80 - 105/300 = -25/300 - After reducing the fraction, the answer is -1/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/75-21/60 20/75-42/60 60/75-21/60 20/75-63/60