Subtract 20/27 from 20/80
20/80 - 20/27 is -53/108.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 27 is 2160
Next, find the equivalent fraction of both fractional numbers with denominator 2160 - For the 1st fraction, since 80 × 27 = 2160,
20/80 = 20 × 27/80 × 27 = 540/2160 - Likewise, for the 2nd fraction, since 27 × 80 = 2160,
20/27 = 20 × 80/27 × 80 = 1600/2160 - Subtract the two like fractions:
540/2160 - 1600/2160 = 540 - 1600/2160 = -1060/2160 - After reducing the fraction, the answer is -53/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/80-20/27 20/80-40/27 20/80-20/54 60/80-20/27 20/80-60/27 20/80-20/81