Subtract 5/50 from 72/20
1st number: 3 12/20, 2nd number: 5/50
72/20 - 5/50 is 7/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 50 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
72/20 = 72 × 5/20 × 5 = 360/100 - Likewise, for the 2nd fraction, since 50 × 2 = 100,
5/50 = 5 × 2/50 × 2 = 10/100 - Subtract the two like fractions:
360/100 - 10/100 = 360 - 10/100 = 350/100 - After reducing the fraction, the answer is 7/2
- In mixed form: 31/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20-10/50 72/40-5/50 72/20-15/50 72/60-5/50 72/20-25/50 72/20-35/50