Subtract 72/20 from 14/4
1st number: 3 2/4, 2nd number: 3 12/20
14/4 - 72/20 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
14/4 = 14 × 5/4 × 5 = 70/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
72/20 = 72 × 1/20 × 1 = 72/20 - Subtract the two like fractions:
70/20 - 72/20 = 70 - 72/20 = -2/20 - After reducing the fraction, the answer is -1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/4-72/20 14/8-72/20 14/4-72/40 42/4-72/20 14/12-72/20 14/4-72/60 70/4-72/20 14/20-72/20 98/4-72/20 14/28-72/20