Subtract 5/4 from 18/9
1st number: 2 0/9, 2nd number: 1 1/4
18/9 - 5/4 is 3/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
18/9 = 18 × 4/9 × 4 = 72/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
5/4 = 5 × 9/4 × 9 = 45/36 - Subtract the two like fractions:
72/36 - 45/36 = 72 - 45/36 = 27/36 - After reducing the fraction, the answer is 3/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/9-5/4 18/9-10/4 18/9-5/8 54/9-5/4 18/9-15/4 18/27-5/4 18/9-5/12 90/9-5/4 18/9-25/4 18/45-5/4 18/9-5/20 18/9-35/4 18/63-5/4 18/9-5/28