Subtract 15/7 from 20/35
1st number: 20/35, 2nd number: 2 1/7
20/35 - 15/7 is -11/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 7 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 35 × 1 = 35,
20/35 = 20 × 1/35 × 1 = 20/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
15/7 = 15 × 5/7 × 5 = 75/35 - Subtract the two like fractions:
20/35 - 75/35 = 20 - 75/35 = -55/35 - After reducing the fraction, the answer is -11/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/35-15/7 20/35-30/7 20/70-15/7 20/35-15/14 60/35-15/7 20/35-45/7 20/35-15/21 20/35-75/7 20/35-15/35 20/35-15/49