Subtract 72/5 from 3/20
1st number: 3/20, 2nd number: 14 2/5
3/20 - 72/5 is -57/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
3/20 = 3 × 1/20 × 1 = 3/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
72/5 = 72 × 4/5 × 4 = 288/20 - Subtract the two like fractions:
3/20 - 288/20 = 3 - 288/20 = -285/20 - After reducing the fraction, the answer is -57/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20-72/5 3/40-72/5 3/20-72/10 9/20-72/5 3/60-72/5 3/20-72/15 15/20-72/5 3/20-72/25 21/20-72/5 3/20-72/35