Subtract 12/36 from 25/90
25/90 - 12/36 is -1/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
25/90 = 25 × 2/90 × 2 = 50/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
12/36 = 12 × 5/36 × 5 = 60/180 - Subtract the two like fractions:
50/180 - 60/180 = 50 - 60/180 = -10/180 - After reducing the fraction, the answer is -1/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/90-12/36 25/90-24/36 25/90-12/72 75/90-12/36 25/90-60/36 25/90-84/36