Subtract 25/18 from 8/28
1st number: 8/28, 2nd number: 1 7/18
8/28 - 25/18 is -139/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
8/28 = 8 × 9/28 × 9 = 72/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
25/18 = 25 × 14/18 × 14 = 350/252 - Subtract the two like fractions:
72/252 - 350/252 = 72 - 350/252 = -278/252 - After reducing the fraction, the answer is -139/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/28-25/18 8/28-50/18 8/56-25/18 8/28-25/36 24/28-25/18 8/28-75/18 8/84-25/18 8/28-25/54 40/28-25/18 8/28-25/90 56/28-25/18