Subtract 1/7 from 20/5
1st number: 4 0/5, 2nd number: 1/7
20/5 - 1/7 is 27/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 7 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 5 × 7 = 35,
20/5 = 20 × 7/5 × 7 = 140/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
1/7 = 1 × 5/7 × 5 = 5/35 - Subtract the two like fractions:
140/35 - 5/35 = 140 - 5/35 = 135/35 - After reducing the fraction, the answer is 27/7
- In mixed form: 36/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/5-1/7 20/5-2/7 20/10-1/7 20/5-1/14 60/5-1/7 20/5-3/7 20/15-1/7 20/5-1/21 20/5-5/7 20/25-1/7 20/5-1/35 20/35-1/7 20/5-1/49