Subtract 49/40 from 9/12
1st number: 9/12, 2nd number: 1 9/40
9/12 - 49/40 is -19/40.
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,
9/12 = 9 × 10/12 × 10 = 90/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
49/40 = 49 × 3/40 × 3 = 147/120 - Subtract the two like fractions:
90/120 - 147/120 = 90 - 147/120 = -57/120 - After reducing the fraction, the answer is -19/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12-49/40 9/12-98/40 9/24-49/40 9/12-49/80 27/12-49/40 9/36-49/40 45/12-49/40 9/60-49/40 63/12-49/40 9/84-49/40