Subtract 20/30 from 72/75
72/75 - 20/30 is 22/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 30 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 75 × 2 = 150,
72/75 = 72 × 2/75 × 2 = 144/150 - Likewise, for the 2nd fraction, since 30 × 5 = 150,
20/30 = 20 × 5/30 × 5 = 100/150 - Subtract the two like fractions:
144/150 - 100/150 = 144 - 100/150 = 44/150 - After reducing the fraction, the answer is 22/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/75-40/30 72/75-20/60 72/75-60/30 72/75-20/90