Subtract 35/20 from 18/80
1st number: 18/80, 2nd number: 1 15/20
18/80 - 35/20 is -61/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
18/80 = 18 × 1/80 × 1 = 18/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
35/20 = 35 × 4/20 × 4 = 140/80 - Subtract the two like fractions:
18/80 - 140/80 = 18 - 140/80 = -122/80 - After reducing the fraction, the answer is -61/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/80-35/20 18/80-70/20 18/80-35/40 54/80-35/20 18/80-35/60 90/80-35/20