Subtract 5/45 from 18/28
18/28 - 5/45 is 67/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
18/28 = 18 × 45/28 × 45 = 810/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
5/45 = 5 × 28/45 × 28 = 140/1260 - Subtract the two like fractions:
810/1260 - 140/1260 = 810 - 140/1260 = 670/1260 - After reducing the fraction, the answer is 67/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28-5/45 18/28-10/45 18/56-5/45 18/28-5/90 54/28-5/45 18/28-15/45 18/84-5/45 90/28-5/45 18/28-25/45 18/28-35/45