Subtract 7/80 from 27/28
27/28 - 7/80 is 491/560.
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,
27/28 = 27 × 20/28 × 20 = 540/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
7/80 = 7 × 7/80 × 7 = 49/560 - Subtract the two like fractions:
540/560 - 49/560 = 540 - 49/560 = 491/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/28-7/80 27/28-14/80 27/56-7/80 81/28-7/80 27/28-21/80 27/84-7/80 27/28-35/80 27/28-49/80