Subtract 9/80 from 20/56
20/56 - 9/80 is 137/560.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 56 × 10 = 560,
20/56 = 20 × 10/56 × 10 = 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: 40/56-9/80 20/56-18/80 60/56-9/80 20/56-27/80 20/56-45/80 20/56-63/80