Subtract 28/40 from 4/14
4/14 - 28/40 is -29/70.
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,
4/14 = 4 × 20/14 × 20 = 80/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
28/40 = 28 × 7/40 × 7 = 196/280 - Subtract the two like fractions:
80/280 - 196/280 = 80 - 196/280 = -116/280 - After reducing the fraction, the answer is -29/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/14-28/40 4/14-56/40 4/28-28/40 4/14-28/80 12/14-28/40 4/14-84/40 4/42-28/40 20/14-28/40 4/70-28/40 28/14-28/40 4/98-28/40