Subtract 9/40 from 28/14
1st number: 2 0/14, 2nd number: 9/40
28/14 - 9/40 is 71/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 14 × 20 = 280,
28/14 = 28 × 20/14 × 20 = 560/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
9/40 = 9 × 7/40 × 7 = 63/280 - Subtract the two like fractions:
560/280 - 63/280 = 560 - 63/280 = 497/280 - After reducing the fraction, the answer is 71/40
- In mixed form: 131/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/14-9/40 28/14-18/40 28/14-9/80 84/14-9/40 28/14-27/40 28/42-9/40 28/14-45/40 28/70-9/40 28/14-63/40 28/98-9/40