Subtract 28/27 from 10/30
1st number: 10/30, 2nd number: 1 1/27
10/30 - 28/27 is -19/27.
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,
10/30 = 10 × 9/30 × 9 = 90/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
28/27 = 28 × 10/27 × 10 = 280/270 - Subtract the two like fractions:
90/270 - 280/270 = 90 - 280/270 = -190/270 - After reducing the fraction, the answer is -19/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/30-28/27 10/30-56/27 10/60-28/27 10/30-28/54 10/30-84/27 10/90-28/27 10/30-28/81 50/30-28/27 70/30-28/27