Subtract 90/54 from 30/36
1st number: 30/36, 2nd number: 1 36/54
30/36 - 90/54 is -5/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 54 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 36 × 3 = 108,
30/36 = 30 × 3/36 × 3 = 90/108 - Likewise, for the 2nd fraction, since 54 × 2 = 108,
90/54 = 90 × 2/54 × 2 = 180/108 - Subtract the two like fractions:
90/108 - 180/108 = 90 - 180/108 = -90/108 - After reducing the fraction, the answer is -5/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/36-90/54 30/72-90/54 90/36-90/54