Subtract 6/28 from 20/45
20/45 - 6/28 is 29/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
20/45 = 20 × 28/45 × 28 = 560/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
6/28 = 6 × 45/28 × 45 = 270/1260 - Subtract the two like fractions:
560/1260 - 270/1260 = 560 - 270/1260 = 290/1260 - After reducing the fraction, the answer is 29/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/45-6/28 20/45-12/28 20/90-6/28 20/45-6/56 60/45-6/28 20/45-18/28 20/45-6/84 20/45-30/28 20/45-42/28