Subtract 75/90 from 18/2
1st number: 9 0/2, 2nd number: 75/90
18/2 - 75/90 is 49/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 90 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 90 × 1 = 90,
75/90 = 75 × 1/90 × 1 = 75/90 - Subtract the two like fractions:
810/90 - 75/90 = 810 - 75/90 = 735/90 - After reducing the fraction, the answer is 49/6
- In mixed form: 81/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/2-75/90 18/4-75/90 54/2-75/90 18/6-75/90 90/2-75/90 18/10-75/90 18/14-75/90