Subtract 27/20 from 3/36
1st number: 3/36, 2nd number: 1 7/20
3/36 - 27/20 is -19/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
3/36 = 3 × 5/36 × 5 = 15/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
27/20 = 27 × 9/20 × 9 = 243/180 - Subtract the two like fractions:
15/180 - 243/180 = 15 - 243/180 = -228/180 - After reducing the fraction, the answer is -19/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/36-27/20 3/36-54/20 3/72-27/20 3/36-27/40 9/36-27/20 3/36-81/20 3/36-27/60 15/36-27/20 21/36-27/20