Subtract 1/27 from 1/30
1/30 - 1/27 is -1/270.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
1/30 = 1 × 9/30 × 9 = 9/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
1/27 = 1 × 10/27 × 10 = 10/270 - Subtract the two like fractions:
9/270 - 10/270 = 9 - 10/270 = -1/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/30-1/27 1/30-2/27 1/60-1/27 1/30-1/54 3/30-1/27 1/30-3/27 1/90-1/27 1/30-1/81 5/30-1/27 1/30-5/27 7/30-1/27 1/30-7/27