Subtract 90/40 from 2/12
1st number: 2/12, 2nd number: 2 10/40
2/12 - 90/40 is -25/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
2/12 = 2 × 10/12 × 10 = 20/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
90/40 = 90 × 3/40 × 3 = 270/120 - Subtract the two like fractions:
20/120 - 270/120 = 20 - 270/120 = -250/120 - After reducing the fraction, the answer is -25/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/12-90/40 2/24-90/40 2/12-90/80 6/12-90/40 2/36-90/40 10/12-90/40 2/60-90/40 14/12-90/40 2/84-90/40