Subtract 27/80 from 4/28
4/28 - 27/80 is -109/560.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 28 × 20 = 560,
4/28 = 4 × 20/28 × 20 = 80/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
27/80 = 27 × 7/80 × 7 = 189/560 - Subtract the two like fractions:
80/560 - 189/560 = 80 - 189/560 = -109/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/28-27/80 4/28-54/80 4/56-27/80 12/28-27/80 4/28-81/80 4/84-27/80 20/28-27/80