Subtract 90/4 from 12/18
1st number: 12/18, 2nd number: 22 2/4
12/18 - 90/4 is -131/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
12/18 = 12 × 2/18 × 2 = 24/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
90/4 = 90 × 9/4 × 9 = 810/36 - Subtract the two like fractions:
24/36 - 810/36 = 24 - 810/36 = -786/36 - After reducing the fraction, the answer is -131/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18-90/4 12/36-90/4 12/18-90/8 36/18-90/4 12/54-90/4 12/18-90/12 60/18-90/4 12/90-90/4 12/18-90/20 84/18-90/4 12/18-90/28