Subtract 45/7 from 20/14
1st number: 1 6/14, 2nd number: 6 3/7
20/14 - 45/7 is -5/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 7 is 14
Next, find the equivalent fraction of both fractional numbers with denominator 14 - For the 1st fraction, since 14 × 1 = 14,
20/14 = 20 × 1/14 × 1 = 20/14 - Likewise, for the 2nd fraction, since 7 × 2 = 14,
45/7 = 45 × 2/7 × 2 = 90/14 - Subtract the two like fractions:
20/14 - 90/14 = 20 - 90/14 = -70/14 - After reducing the fraction, the answer is -5/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/14-45/7 20/14-90/7 20/28-45/7 20/14-45/14 60/14-45/7 20/42-45/7 20/14-45/21 20/70-45/7 20/14-45/35 20/98-45/7 20/14-45/49