Subtract 6/28 from 15/40
15/40 - 6/28 is 9/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 28 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
15/40 = 15 × 7/40 × 7 = 105/280 - Likewise, for the 2nd fraction, since 28 × 10 = 280,
6/28 = 6 × 10/28 × 10 = 60/280 - Subtract the two like fractions:
105/280 - 60/280 = 105 - 60/280 = 45/280 - After reducing the fraction, the answer is 9/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/40-6/28 15/40-12/28 15/80-6/28 15/40-6/56 45/40-6/28 15/40-18/28 15/40-6/84 75/40-6/28 15/40-30/28 15/40-42/28