Subtract 90/5 from 12/18
1st number: 12/18, 2nd number: 18 0/5
12/18 - 90/5 is -52/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 5 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
12/18 = 12 × 5/18 × 5 = 60/90 - Likewise, for the 2nd fraction, since 5 × 18 = 90,
90/5 = 90 × 18/5 × 18 = 1620/90 - Subtract the two like fractions:
60/90 - 1620/90 = 60 - 1620/90 = -1560/90 - After reducing the fraction, the answer is -52/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18-90/5 12/36-90/5 12/18-90/10 36/18-90/5 12/54-90/5 12/18-90/15 60/18-90/5 12/90-90/5 12/18-90/25 84/18-90/5 12/18-90/35