Subtract 30/20 from 14/18
1st number: 14/18, 2nd number: 1 10/20
14/18 - 30/20 is -13/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
14/18 = 14 × 10/18 × 10 = 140/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
30/20 = 30 × 9/20 × 9 = 270/180 - Subtract the two like fractions:
140/180 - 270/180 = 140 - 270/180 = -130/180 - After reducing the fraction, the answer is -13/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/18-30/20 14/18-60/20 14/36-30/20 14/18-30/40 42/18-30/20 14/18-90/20 14/54-30/20 14/18-30/60 70/18-30/20 14/90-30/20 98/18-30/20