Subtract 20/54 from 1/5
1/5 - 20/54 is -23/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 5 × 54 = 270,
1/5 = 1 × 54/5 × 54 = 54/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
20/54 = 20 × 5/54 × 5 = 100/270 - Subtract the two like fractions:
54/270 - 100/270 = 54 - 100/270 = -46/270 - After reducing the fraction, the answer is -23/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/5-20/54 1/5-40/54 1/10-20/54 3/5-20/54 1/5-60/54 1/15-20/54 1/25-20/54 7/5-20/54 1/35-20/54