Subtract 27/4 from 20/15
1st number: 1 5/15, 2nd number: 6 3/4
20/15 - 27/4 is -65/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 4 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
20/15 = 20 × 4/15 × 4 = 80/60 - Likewise, for the 2nd fraction, since 4 × 15 = 60,
27/4 = 27 × 15/4 × 15 = 405/60 - Subtract the two like fractions:
80/60 - 405/60 = 80 - 405/60 = -325/60 - After reducing the fraction, the answer is -65/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15-27/4 20/15-54/4 20/30-27/4 20/15-27/8 60/15-27/4 20/15-81/4 20/45-27/4 20/15-27/12 20/75-27/4 20/15-27/20 20/15-27/28