Subtract 30/20 from 35/18
1st number: 1 17/18, 2nd number: 1 10/20
35/18 - 30/20 is 4/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
35/18 = 35 × 10/18 × 10 = 350/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
30/20 = 30 × 9/20 × 9 = 270/180 - Subtract the two like fractions:
350/180 - 270/180 = 350 - 270/180 = 80/180 - After reducing the fraction, the answer is 4/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/18-30/20 35/18-60/20 35/36-30/20 35/18-30/40 35/18-90/20 35/54-30/20 35/18-30/60 35/90-30/20