Subtract 20/5 from 35/18
1st number: 1 17/18, 2nd number: 4 0/5
35/18 - 20/5 is -37/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 5 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
35/18 = 35 × 5/18 × 5 = 175/90 - Likewise, for the 2nd fraction, since 5 × 18 = 90,
20/5 = 20 × 18/5 × 18 = 360/90 - Subtract the two like fractions:
175/90 - 360/90 = 175 - 360/90 = -185/90 - After reducing the fraction, the answer is -37/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/18-20/5 35/18-40/5 35/36-20/5 35/18-20/10 35/18-60/5 35/54-20/5 35/18-20/15 35/90-20/5 35/18-20/25 35/18-20/35