Subtract 12/90 from 40/18
1st number: 2 4/18, 2nd number: 12/90
40/18 - 12/90 is 94/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
40/18 = 40 × 5/18 × 5 = 200/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
12/90 = 12 × 1/90 × 1 = 12/90 - Subtract the two like fractions:
200/90 - 12/90 = 200 - 12/90 = 188/90 - After reducing the fraction, the answer is 94/45
- In mixed form: 24/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18-12/90 40/18-24/90 40/36-12/90 40/18-36/90 40/54-12/90 40/18-60/90 40/90-12/90 40/18-84/90