Subtract 20/54 from 90/8
1st number: 11 2/8, 2nd number: 20/54
90/8 - 20/54 is 1175/108.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 54 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 8 × 27 = 216,
90/8 = 90 × 27/8 × 27 = 2430/216 - Likewise, for the 2nd fraction, since 54 × 4 = 216,
20/54 = 20 × 4/54 × 4 = 80/216 - Subtract the two like fractions:
2430/216 - 80/216 = 2430 - 80/216 = 2350/216 - After reducing the fraction, the answer is 1175/108
- In mixed form: 1095/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/8-40/54 90/16-20/54 90/8-60/54 90/24-20/54 90/40-20/54 90/56-20/54