Subtract 56/36 from 20/80
1st number: 20/80, 2nd number: 1 20/36
20/80 - 56/36 is -47/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 36 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
20/80 = 20 × 9/80 × 9 = 180/720 - Likewise, for the 2nd fraction, since 36 × 20 = 720,
56/36 = 56 × 20/36 × 20 = 1120/720 - Subtract the two like fractions:
180/720 - 1120/720 = 180 - 1120/720 = -940/720 - After reducing the fraction, the answer is -47/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/80-56/36 20/80-56/72 60/80-56/36