Subtract 18/75 from 20/28
20/28 - 18/75 is 83/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 75 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 28 × 75 = 2100,
20/28 = 20 × 75/28 × 75 = 1500/2100 - Likewise, for the 2nd fraction, since 75 × 28 = 2100,
18/75 = 18 × 28/75 × 28 = 504/2100 - Subtract the two like fractions:
1500/2100 - 504/2100 = 1500 - 504/2100 = 996/2100 - After reducing the fraction, the answer is 83/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/28-18/75 20/28-36/75 20/56-18/75 60/28-18/75 20/28-54/75 20/84-18/75 20/28-90/75