Subtract 27/10 from 18/36
1st number: 18/36, 2nd number: 2 7/10
18/36 - 27/10 is -11/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 10 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
18/36 = 18 × 5/36 × 5 = 90/180 - Likewise, for the 2nd fraction, since 10 × 18 = 180,
27/10 = 27 × 18/10 × 18 = 486/180 - Subtract the two like fractions:
90/180 - 486/180 = 90 - 486/180 = -396/180 - After reducing the fraction, the answer is -11/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/36-54/10 18/72-27/10 18/36-27/20 54/36-27/10 18/36-81/10 18/36-27/30 90/36-27/10 18/36-27/50 18/36-27/70