Subtract 27/45 from 18/2
1st number: 9 0/2, 2nd number: 27/45
18/2 - 27/45 is 42/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
18/2 = 18 × 45/2 × 45 = 810/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
27/45 = 27 × 2/45 × 2 = 54/90 - Subtract the two like fractions:
810/90 - 54/90 = 810 - 54/90 = 756/90 - After reducing the fraction, the answer is 42/5
- In mixed form: 82/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/2-27/45 18/2-54/45 18/4-27/45 18/2-27/90 54/2-27/45 18/2-81/45 18/6-27/45 90/2-27/45 18/10-27/45 18/14-27/45