Subtract 20/27 from 18/10
1st number: 1 8/10, 2nd number: 20/27
18/10 - 20/27 is 143/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 10 × 27 = 270,
18/10 = 18 × 27/10 × 27 = 486/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
20/27 = 20 × 10/27 × 10 = 200/270 - Subtract the two like fractions:
486/270 - 200/270 = 486 - 200/270 = 286/270 - After reducing the fraction, the answer is 143/135
- In mixed form: 18/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/10-20/27 18/10-40/27 18/20-20/27 18/10-20/54 54/10-20/27 18/10-60/27 18/30-20/27 18/10-20/81 90/10-20/27 18/50-20/27 18/70-20/27