Subtract 20/8 from 30/54
1st number: 30/54, 2nd number: 2 4/8
30/54 - 20/8 is -35/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 8 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 54 × 4 = 216,
30/54 = 30 × 4/54 × 4 = 120/216 - Likewise, for the 2nd fraction, since 8 × 27 = 216,
20/8 = 20 × 27/8 × 27 = 540/216 - Subtract the two like fractions:
120/216 - 540/216 = 120 - 540/216 = -420/216 - After reducing the fraction, the answer is -35/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/54-20/8 30/54-40/8 30/54-20/16 90/54-20/8 30/54-60/8 30/54-20/24 30/54-20/40 30/54-20/56