Subtract 2/60 from 21/72
21/72 - 2/60 is 31/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 60 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360 - Likewise, for the 2nd fraction, since 60 × 6 = 360,
2/60 = 2 × 6/60 × 6 = 12/360 - Subtract the two like fractions:
105/360 - 12/360 = 105 - 12/360 = 93/360 - After reducing the fraction, the answer is 31/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/72-2/60 21/72-4/60 63/72-2/60 21/72-6/60 21/72-10/60 21/72-14/60