Subtract 30/28 from 2/18
1st number: 2/18, 2nd number: 1 2/28
2/18 - 30/28 is -121/126.
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,
2/18 = 2 × 14/18 × 14 = 28/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
30/28 = 30 × 9/28 × 9 = 270/252 - Subtract the two like fractions:
28/252 - 270/252 = 28 - 270/252 = -242/252 - After reducing the fraction, the answer is -121/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/18-30/28 2/18-60/28 2/36-30/28 2/18-30/56 6/18-30/28 2/18-90/28 2/54-30/28 2/18-30/84 10/18-30/28 2/90-30/28 14/18-30/28