Subtract 5/20 from 72/4
1st number: 18 0/4, 2nd number: 5/20
72/4 - 5/20 is 71/4.
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,
72/4 = 72 × 5/4 × 5 = 360/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
5/20 = 5 × 1/20 × 1 = 5/20 - Subtract the two like fractions:
360/20 - 5/20 = 360 - 5/20 = 355/20 - After reducing the fraction, the answer is 71/4
- In mixed form: 173/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/4-10/20 72/8-5/20 72/4-5/40 72/4-15/20 72/12-5/20 72/4-5/60 72/4-25/20 72/20-5/20 72/4-35/20 72/28-5/20