Subtract 18/45 from 18/5
1st number: 3 3/5, 2nd number: 18/45
18/5 - 18/45 is 16/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
18/5 = 18 × 9/5 × 9 = 162/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
18/45 = 18 × 1/45 × 1 = 18/45 - Subtract the two like fractions:
162/45 - 18/45 = 162 - 18/45 = 144/45 - After reducing the fraction, the answer is 16/5
- In mixed form: 31/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/5-18/45 18/5-36/45 18/10-18/45 18/5-18/90 54/5-18/45 18/5-54/45 18/15-18/45 90/5-18/45 18/5-90/45 18/25-18/45 18/35-18/45