Subtract 20/54 from 10/30
10/30 - 20/54 is -1/27.
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,
10/30 = 10 × 9/30 × 9 = 90/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
20/54 = 20 × 5/54 × 5 = 100/270 - Subtract the two like fractions:
90/270 - 100/270 = 90 - 100/270 = -10/270 - After reducing the fraction, the answer is -1/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/30-20/54 10/30-40/54 10/60-20/54 10/30-60/54 10/90-20/54 50/30-20/54 70/30-20/54