Subtract 20/18 from 84/56
1st number: 1 28/56, 2nd number: 1 2/18
84/56 - 20/18 is 7/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 18 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
84/56 = 84 × 9/56 × 9 = 756/504 - Likewise, for the 2nd fraction, since 18 × 28 = 504,
20/18 = 20 × 28/18 × 28 = 560/504 - Subtract the two like fractions:
756/504 - 560/504 = 756 - 560/504 = 196/504 - After reducing the fraction, the answer is 7/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56-40/18 84/56-20/36 84/56-60/18 84/56-20/54 84/56-20/90