Subtract 2/18 from 30/28
1st number: 1 2/28, 2nd number: 2/18
30/28 - 2/18 is 121/126.
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,
30/28 = 30 × 9/28 × 9 = 270/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
2/18 = 2 × 14/18 × 14 = 28/252 - Subtract the two like fractions:
270/252 - 28/252 = 270 - 28/252 = 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: 60/28-2/18 30/28-4/18 30/56-2/18 30/28-2/36 90/28-2/18 30/28-6/18 30/84-2/18 30/28-2/54 30/28-10/18 30/28-2/90 30/28-14/18