Subtract 6/40 from 4/28
4/28 - 6/40 is -1/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
4/28 = 4 × 10/28 × 10 = 40/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
6/40 = 6 × 7/40 × 7 = 42/280 - Subtract the two like fractions:
40/280 - 42/280 = 40 - 42/280 = -2/280 - After reducing the fraction, the answer is -1/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/28-6/40 4/28-12/40 4/56-6/40 4/28-6/80 12/28-6/40 4/28-18/40 4/84-6/40 20/28-6/40 4/28-30/40 4/28-42/40