Subtract 2/90 from 7/12
7/12 - 2/90 is 101/180.
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,
7/12 = 7 × 15/12 × 15 = 105/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
2/90 = 2 × 2/90 × 2 = 4/180 - Subtract the two like fractions:
105/180 - 4/180 = 105 - 4/180 = 101/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/12-2/90 7/12-4/90 7/24-2/90 21/12-2/90 7/12-6/90 7/36-2/90 35/12-2/90 7/12-10/90 7/60-2/90 49/12-2/90 7/12-14/90 7/84-2/90