Subtract 10/15 from 20/27
20/27 - 10/15 is 2/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 15 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 27 × 5 = 135,
20/27 = 20 × 5/27 × 5 = 100/135 - Likewise, for the 2nd fraction, since 15 × 9 = 135,
10/15 = 10 × 9/15 × 9 = 90/135 - Subtract the two like fractions:
100/135 - 90/135 = 100 - 90/135 = 10/135 - After reducing the fraction, the answer is 2/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/27-10/15 20/27-20/15 20/54-10/15 20/27-10/30 60/27-10/15 20/27-30/15 20/81-10/15 20/27-10/45 20/27-50/15 20/27-10/75 20/27-70/15