Subtract 18/14 from 10/20
1st number: 10/20, 2nd number: 1 4/14
10/20 - 18/14 is -11/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 14 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
10/20 = 10 × 7/20 × 7 = 70/140 - Likewise, for the 2nd fraction, since 14 × 10 = 140,
18/14 = 18 × 10/14 × 10 = 180/140 - Subtract the two like fractions:
70/140 - 180/140 = 70 - 180/140 = -110/140 - After reducing the fraction, the answer is -11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20-36/14 10/40-18/14 10/20-18/28 30/20-18/14 10/20-54/14 10/60-18/14 10/20-18/42 50/20-18/14 10/20-90/14 10/20-18/70 70/20-18/14 10/20-18/98