Subtract 12/8 from 9/18
1st number: 9/18, 2nd number: 1 4/8
9/18 - 12/8 is -1/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
9/18 = 9 × 4/18 × 4 = 36/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
12/8 = 12 × 9/8 × 9 = 108/72 - Subtract the two like fractions:
36/72 - 108/72 = 36 - 108/72 = -72/72 - After reducing the fraction, the answer is -1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/18-24/8 9/36-12/8 9/18-12/16 27/18-12/8 9/18-36/8 9/54-12/8 9/18-12/24 45/18-12/8 9/18-60/8 9/90-12/8 9/18-12/40 63/18-12/8 9/18-84/8 9/18-12/56