Subtract 9/18 from 9/8
1st number: 1 1/8, 2nd number: 9/18
9/8 - 9/18 is 5/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
9/8 = 9 × 9/8 × 9 = 81/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
9/18 = 9 × 4/18 × 4 = 36/72 - Subtract the two like fractions:
81/72 - 36/72 = 81 - 36/72 = 45/72 - After reducing the fraction, the answer is 5/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/8-9/18 9/16-9/18 9/8-9/36 27/8-9/18 9/8-27/18 9/24-9/18 9/8-9/54 45/8-9/18 9/8-45/18 9/40-9/18 9/8-9/90 63/8-9/18 9/8-63/18 9/56-9/18