Subtract 48/18 from 30/28
1st number: 1 2/28, 2nd number: 2 12/18
30/28 - 48/18 is -67/42.
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,
48/18 = 48 × 14/18 × 14 = 672/252 - Subtract the two like fractions:
270/252 - 672/252 = 270 - 672/252 = -402/252 - After reducing the fraction, the answer is -67/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/28-48/18 30/28-96/18 30/56-48/18 30/28-48/36 90/28-48/18 30/84-48/18 30/28-48/54 30/28-48/90