Subtract 5/18 from 12/8
1st number: 1 4/8, 2nd number: 5/18
12/8 - 5/18 is 11/9.
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,
12/8 = 12 × 9/8 × 9 = 108/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
5/18 = 5 × 4/18 × 4 = 20/72 - Subtract the two like fractions:
108/72 - 20/72 = 108 - 20/72 = 88/72 - After reducing the fraction, the answer is 11/9
- In mixed form: 12/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/8-5/18 12/8-10/18 12/16-5/18 12/8-5/36 36/8-5/18 12/8-15/18 12/24-5/18 12/8-5/54 60/8-5/18 12/8-25/18 12/40-5/18 12/8-5/90 84/8-5/18 12/8-35/18 12/56-5/18