Subtract 90/12 from 4/18
1st number: 4/18, 2nd number: 7 6/12
4/18 - 90/12 is -131/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
4/18 = 4 × 2/18 × 2 = 8/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
90/12 = 90 × 3/12 × 3 = 270/36 - Subtract the two like fractions:
8/36 - 270/36 = 8 - 270/36 = -262/36 - After reducing the fraction, the answer is -131/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/18-90/12 4/36-90/12 4/18-90/24 12/18-90/12 4/54-90/12 4/18-90/36 20/18-90/12 4/90-90/12 4/18-90/60 28/18-90/12 4/18-90/84