Subtract 20/35 from 10/15
10/15 - 20/35 is 2/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
10/15 = 10 × 7/15 × 7 = 70/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
20/35 = 20 × 3/35 × 3 = 60/105 - Subtract the two like fractions:
70/105 - 60/105 = 70 - 60/105 = 10/105 - After reducing the fraction, the answer is 2/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/15-20/35 10/15-40/35 10/30-20/35 10/15-20/70 30/15-20/35 10/15-60/35 10/45-20/35 50/15-20/35 10/75-20/35 70/15-20/35