Subtract 12/54 from 90/30
1st number: 3 0/30, 2nd number: 12/54
90/30 - 12/54 is 25/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
90/30 = 90 × 9/30 × 9 = 810/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
12/54 = 12 × 5/54 × 5 = 60/270 - Subtract the two like fractions:
810/270 - 60/270 = 810 - 60/270 = 750/270 - After reducing the fraction, the answer is 25/9
- In mixed form: 27/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30-24/54 90/60-12/54 90/30-36/54 90/30-60/54 90/30-84/54