Subtract 40/18 from 90/2
1st number: 45 0/2, 2nd number: 2 4/18
90/2 - 40/18 is 385/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 2 × 9 = 18,
90/2 = 90 × 9/2 × 9 = 810/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
40/18 = 40 × 1/18 × 1 = 40/18 - Subtract the two like fractions:
810/18 - 40/18 = 810 - 40/18 = 770/18 - After reducing the fraction, the answer is 385/9
- In mixed form: 427/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/2-80/18 90/4-40/18 90/2-40/36 90/6-40/18 90/2-40/54 90/10-40/18 90/2-40/90 90/14-40/18