Subtract 21/9 from 14/20
1st number: 14/20, 2nd number: 2 3/9
14/20 - 21/9 is -49/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
14/20 = 14 × 9/20 × 9 = 126/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
21/9 = 21 × 20/9 × 20 = 420/180 - Subtract the two like fractions:
126/180 - 420/180 = 126 - 420/180 = -294/180 - After reducing the fraction, the answer is -49/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/20-21/9 14/20-42/9 14/40-21/9 14/20-21/18 42/20-21/9 14/20-63/9 14/60-21/9 14/20-21/27 70/20-21/9 14/20-21/45 98/20-21/9 14/20-21/63