Subtract 80/18 from 27/10
1st number: 2 7/10, 2nd number: 4 8/18
27/10 - 80/18 is -157/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
27/10 = 27 × 9/10 × 9 = 243/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
80/18 = 80 × 5/18 × 5 = 400/90 - Subtract the two like fractions:
243/90 - 400/90 = 243 - 400/90 = -157/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/10-80/18 27/20-80/18 27/10-80/36 81/10-80/18 27/30-80/18 27/10-80/54 27/50-80/18 27/10-80/90 27/70-80/18