Subtract 30/28 from 25/18
1st number: 1 7/18, 2nd number: 1 2/28
25/18 - 30/28 is 20/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
25/18 = 25 × 14/18 × 14 = 350/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
30/28 = 30 × 9/28 × 9 = 270/252 - Subtract the two like fractions:
350/252 - 270/252 = 350 - 270/252 = 80/252 - After reducing the fraction, the answer is 20/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/18-30/28 25/18-60/28 25/36-30/28 25/18-30/56 75/18-30/28 25/18-90/28 25/54-30/28 25/18-30/84 25/90-30/28