Subtract 25/90 from 1/12
1/12 - 25/90 is -7/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
1/12 = 1 × 15/12 × 15 = 15/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
25/90 = 25 × 2/90 × 2 = 50/180 - Subtract the two like fractions:
15/180 - 50/180 = 15 - 50/180 = -35/180 - After reducing the fraction, the answer is -7/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/12-25/90 1/12-50/90 1/24-25/90 3/12-25/90 1/12-75/90 1/36-25/90 5/12-25/90 1/60-25/90 7/12-25/90 1/84-25/90