Subtract 20/56 from 30/80
30/80 - 20/56 is 1/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 56 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
30/80 = 30 × 7/80 × 7 = 210/560 - Likewise, for the 2nd fraction, since 56 × 10 = 560,
20/56 = 20 × 10/56 × 10 = 200/560 - Subtract the two like fractions:
210/560 - 200/560 = 210 - 200/560 = 10/560 - After reducing the fraction, the answer is 1/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/80-20/56 30/80-40/56 90/80-20/56 30/80-60/56