Subtract 25/36 from 3/20
3/20 - 25/36 is -49/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
3/20 = 3 × 9/20 × 9 = 27/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
25/36 = 25 × 5/36 × 5 = 125/180 - Subtract the two like fractions:
27/180 - 125/180 = 27 - 125/180 = -98/180 - After reducing the fraction, the answer is -49/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20-25/36 3/20-50/36 3/40-25/36 3/20-25/72 9/20-25/36 3/20-75/36 3/60-25/36 15/20-25/36 21/20-25/36