Subtract 7/9 from 18/8
1st number: 2 2/8, 2nd number: 7/9
18/8 - 7/9 is 53/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
18/8 = 18 × 9/8 × 9 = 162/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
7/9 = 7 × 8/9 × 8 = 56/72 - Subtract the two like fractions:
162/72 - 56/72 = 162 - 56/72 = 106/72 - After reducing the fraction, the answer is 53/36
- In mixed form: 117/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8-7/9 18/8-14/9 18/16-7/9 18/8-7/18 54/8-7/9 18/8-21/9 18/24-7/9 18/8-7/27 90/8-7/9 18/8-35/9 18/40-7/9 18/8-7/45 18/8-49/9 18/56-7/9 18/8-7/63