Subtract 90/12 from 2/5
1st number: 2/5, 2nd number: 7 6/12
2/5 - 90/12 is -71/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
2/5 = 2 × 12/5 × 12 = 24/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
90/12 = 90 × 5/12 × 5 = 450/60 - Subtract the two like fractions:
24/60 - 450/60 = 24 - 450/60 = -426/60 - After reducing the fraction, the answer is -71/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/5-90/12 2/10-90/12 2/5-90/24 6/5-90/12 2/15-90/12 2/5-90/36 10/5-90/12 2/25-90/12 2/5-90/60 14/5-90/12 2/35-90/12 2/5-90/84