Subtract 15/20 from 10/35
10/35 - 15/20 is -13/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 35 × 4 = 140,
10/35 = 10 × 4/35 × 4 = 40/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
15/20 = 15 × 7/20 × 7 = 105/140 - Subtract the two like fractions:
40/140 - 105/140 = 40 - 105/140 = -65/140 - After reducing the fraction, the answer is -13/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/35-15/20 10/35-30/20 10/70-15/20 10/35-15/40 30/35-15/20 10/35-45/20 10/35-15/60 50/35-15/20 10/35-75/20 70/35-15/20