Subtract 9/80 from 10/28
10/28 - 9/80 is 137/560.
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,
10/28 = 10 × 20/28 × 20 = 200/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
9/80 = 9 × 7/80 × 7 = 63/560 - Subtract the two like fractions:
200/560 - 63/560 = 200 - 63/560 = 137/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/28-9/80 10/28-18/80 10/56-9/80 30/28-9/80 10/28-27/80 10/84-9/80 50/28-9/80 10/28-45/80 70/28-9/80 10/28-63/80