Subtract 5/30 from 18/54
18/54 - 5/30 is 1/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 30 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
18/54 = 18 × 5/54 × 5 = 90/270 - Likewise, for the 2nd fraction, since 30 × 9 = 270,
5/30 = 5 × 9/30 × 9 = 45/270 - Subtract the two like fractions:
90/270 - 45/270 = 90 - 45/270 = 45/270 - After reducing the fraction, the answer is 1/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/54-5/30 18/54-10/30 18/54-5/60 18/54-15/30 18/54-5/90 90/54-5/30 18/54-25/30 18/54-35/30