Subtract 20/75 from 1/28
1/28 - 20/75 is -97/420.
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,
1/28 = 1 × 75/28 × 75 = 75/2100 - Likewise, for the 2nd fraction, since 75 × 28 = 2100,
20/75 = 20 × 28/75 × 28 = 560/2100 - Subtract the two like fractions:
75/2100 - 560/2100 = 75 - 560/2100 = -485/2100 - After reducing the fraction, the answer is -97/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/28-20/75 1/28-40/75 1/56-20/75 3/28-20/75 1/28-60/75 1/84-20/75 5/28-20/75 7/28-20/75