Subtract 6/72 from 40/28
1st number: 1 12/28, 2nd number: 6/72
40/28 - 6/72 is 113/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 28 × 18 = 504,
40/28 = 40 × 18/28 × 18 = 720/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
6/72 = 6 × 7/72 × 7 = 42/504 - Subtract the two like fractions:
720/504 - 42/504 = 720 - 42/504 = 678/504 - After reducing the fraction, the answer is 113/84
- In mixed form: 129/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/28-6/72 40/28-12/72 40/56-6/72 40/28-18/72 40/84-6/72 40/28-30/72 40/28-42/72