Subtract 49/90 from 2/12
2/12 - 49/90 is -17/45.
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,
2/12 = 2 × 15/12 × 15 = 30/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
49/90 = 49 × 2/90 × 2 = 98/180 - Subtract the two like fractions:
30/180 - 98/180 = 30 - 98/180 = -68/180 - After reducing the fraction, the answer is -17/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/12-49/90 2/12-98/90 2/24-49/90 6/12-49/90 2/36-49/90 10/12-49/90 2/60-49/90 14/12-49/90 2/84-49/90