Subtract 3/20 from 18/75
18/75 - 3/20 is 9/100.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 20 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 75 × 4 = 300,
18/75 = 18 × 4/75 × 4 = 72/300 - Likewise, for the 2nd fraction, since 20 × 15 = 300,
3/20 = 3 × 15/20 × 15 = 45/300 - Subtract the two like fractions:
72/300 - 45/300 = 72 - 45/300 = 27/300 - After reducing the fraction, the answer is 9/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/75-3/20 18/75-6/20 18/75-3/40 54/75-3/20 18/75-9/20 18/75-3/60 90/75-3/20 18/75-15/20 18/75-21/20