Subtract 21/45 from 6/28
6/28 - 21/45 is -53/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
6/28 = 6 × 45/28 × 45 = 270/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
21/45 = 21 × 28/45 × 28 = 588/1260 - Subtract the two like fractions:
270/1260 - 588/1260 = 270 - 588/1260 = -318/1260 - After reducing the fraction, the answer is -53/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/28-21/45 6/28-42/45 6/56-21/45 6/28-21/90 18/28-21/45 6/28-63/45 6/84-21/45 30/28-21/45 42/28-21/45