Subtract 12/14 from 7/20
7/20 - 12/14 is -71/140.
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,
7/20 = 7 × 7/20 × 7 = 49/140 - Likewise, for the 2nd fraction, since 14 × 10 = 140,
12/14 = 12 × 10/14 × 10 = 120/140 - Subtract the two like fractions:
49/140 - 120/140 = 49 - 120/140 = -71/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/20-12/14 7/20-24/14 7/40-12/14 7/20-12/28 21/20-12/14 7/20-36/14 7/60-12/14 7/20-12/42 35/20-12/14 7/20-60/14 7/20-12/70 49/20-12/14 7/20-84/14 7/20-12/98