Subtract 7/18 from 18/8
1st number: 2 2/8, 2nd number: 7/18
18/8 - 7/18 is 67/36.
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,
18/8 = 18 × 9/8 × 9 = 162/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
7/18 = 7 × 4/18 × 4 = 28/72 - Subtract the two like fractions:
162/72 - 28/72 = 162 - 28/72 = 134/72 - After reducing the fraction, the answer is 67/36
- In mixed form: 131/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8-7/18 18/8-14/18 18/16-7/18 18/8-7/36 54/8-7/18 18/8-21/18 18/24-7/18 18/8-7/54 90/8-7/18 18/8-35/18 18/40-7/18 18/8-7/90 18/8-49/18 18/56-7/18