Subtract 12/9 from 90/54
1st number: 1 36/54, 2nd number: 1 3/9
90/54 - 12/9 is 1/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 9 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 54 × 1 = 54,
90/54 = 90 × 1/54 × 1 = 90/54 - Likewise, for the 2nd fraction, since 9 × 6 = 54,
12/9 = 12 × 6/9 × 6 = 72/54 - Subtract the two like fractions:
90/54 - 72/54 = 90 - 72/54 = 18/54 - After reducing the fraction, the answer is 1/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/54-24/9 90/54-12/18 90/54-36/9 90/54-12/27 90/54-60/9 90/54-12/45 90/54-84/9 90/54-12/63