Subtract 28/20 from 72/60
1st number: 1 12/60, 2nd number: 1 8/20
72/60 - 28/20 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 60 × 1 = 60,
72/60 = 72 × 1/60 × 1 = 72/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
28/20 = 28 × 3/20 × 3 = 84/60 - Subtract the two like fractions:
72/60 - 84/60 = 72 - 84/60 = -12/60 - After reducing the fraction, the answer is -1/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/60-56/20 72/60-28/40 72/60-84/20 72/60-28/60