Subtract 14/45 from 3/20
3/20 - 14/45 is -29/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
3/20 = 3 × 9/20 × 9 = 27/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
14/45 = 14 × 4/45 × 4 = 56/180 - Subtract the two like fractions:
27/180 - 56/180 = 27 - 56/180 = -29/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20-14/45 3/20-28/45 3/40-14/45 3/20-14/90 9/20-14/45 3/20-42/45 3/60-14/45 15/20-14/45 3/20-70/45 21/20-14/45 3/20-98/45