Subtract 90/54 from 30/18
1st number: 1 12/18, 2nd number: 1 36/54
30/18 - 90/54 is 0/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 18 × 3 = 54,
30/18 = 30 × 3/18 × 3 = 90/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
90/54 = 90 × 1/54 × 1 = 90/54 - Subtract the two like fractions:
90/54 - 90/54 = 90 - 90/54 = 0/54 - The answer is 0
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18-90/54 30/36-90/54 90/18-90/54 30/54-90/54 30/90-90/54