Subtract 6/90 from 6/12
6/12 - 6/90 is 13/30.
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,
6/12 = 6 × 15/12 × 15 = 90/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
6/90 = 6 × 2/90 × 2 = 12/180 - Subtract the two like fractions:
90/180 - 12/180 = 90 - 12/180 = 78/180 - After reducing the fraction, the answer is 13/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12-12/90 6/24-6/90 18/12-6/90 6/12-18/90 6/36-6/90 30/12-6/90 6/12-30/90 6/60-6/90 42/12-6/90 6/12-42/90 6/84-6/90