Subtract 32/80 from 20/54
20/54 - 32/80 is -4/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 80 is 2160
Next, find the equivalent fraction of both fractional numbers with denominator 2160 - For the 1st fraction, since 54 × 40 = 2160,
20/54 = 20 × 40/54 × 40 = 800/2160 - Likewise, for the 2nd fraction, since 80 × 27 = 2160,
32/80 = 32 × 27/80 × 27 = 864/2160 - Subtract the two like fractions:
800/2160 - 864/2160 = 800 - 864/2160 = -64/2160 - After reducing the fraction, the answer is -4/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/54-32/80 20/54-64/80 60/54-32/80 20/54-96/80