Subtract 2/15 from 40/28
1st number: 1 12/28, 2nd number: 2/15
40/28 - 2/15 is 136/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
40/28 = 40 × 15/28 × 15 = 600/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
2/15 = 2 × 28/15 × 28 = 56/420 - Subtract the two like fractions:
600/420 - 56/420 = 600 - 56/420 = 544/420 - After reducing the fraction, the answer is 136/105
- In mixed form: 131/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/28-2/15 40/28-4/15 40/56-2/15 40/28-2/30 40/28-6/15 40/84-2/15 40/28-2/45 40/28-10/15 40/28-2/75 40/28-14/15