Subtract 24/20 from 9/18
1st number: 9/18, 2nd number: 1 4/20
9/18 - 24/20 is -7/10.
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,
9/18 = 9 × 10/18 × 10 = 90/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
24/20 = 24 × 9/20 × 9 = 216/180 - Subtract the two like fractions:
90/180 - 216/180 = 90 - 216/180 = -126/180 - After reducing the fraction, the answer is -7/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/18-48/20 9/36-24/20 9/18-24/40 27/18-24/20 9/18-72/20 9/54-24/20 9/18-24/60 45/18-24/20 9/90-24/20 63/18-24/20