Subtract 45/18 from 2/28
1st number: 2/28, 2nd number: 2 9/18
2/28 - 45/18 is -17/7.
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,
2/28 = 2 × 9/28 × 9 = 18/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
45/18 = 45 × 14/18 × 14 = 630/252 - Subtract the two like fractions:
18/252 - 630/252 = 18 - 630/252 = -612/252 - After reducing the fraction, the answer is -17/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/28-45/18 2/28-90/18 2/56-45/18 2/28-45/36 6/28-45/18 2/84-45/18 2/28-45/54 10/28-45/18 2/28-45/90 14/28-45/18