Subtract 40/14 from 15/9
1st number: 1 6/9, 2nd number: 2 12/14
15/9 - 40/14 is -25/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 14 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 9 × 14 = 126,
15/9 = 15 × 14/9 × 14 = 210/126 - Likewise, for the 2nd fraction, since 14 × 9 = 126,
40/14 = 40 × 9/14 × 9 = 360/126 - Subtract the two like fractions:
210/126 - 360/126 = 210 - 360/126 = -150/126 - After reducing the fraction, the answer is -25/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/9-40/14 15/9-80/14 15/18-40/14 15/9-40/28 45/9-40/14 15/27-40/14 15/9-40/42 75/9-40/14 15/45-40/14 15/9-40/70 15/63-40/14 15/9-40/98