Subtract 20/18 from 14/72
1st number: 14/72, 2nd number: 1 2/18
14/72 - 20/18 is -11/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
14/72 = 14 × 1/72 × 1 = 14/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
20/18 = 20 × 4/18 × 4 = 80/72 - Subtract the two like fractions:
14/72 - 80/72 = 14 - 80/72 = -66/72 - After reducing the fraction, the answer is -11/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/72-20/18 14/72-40/18 14/72-20/36 42/72-20/18 14/72-60/18 14/72-20/54 70/72-20/18 14/72-20/90 98/72-20/18