Subtract 6/90 from 18/4
1st number: 4 2/4, 2nd number: 6/90
18/4 - 6/90 is 133/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
18/4 = 18 × 45/4 × 45 = 810/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
6/90 = 6 × 2/90 × 2 = 12/180 - Subtract the two like fractions:
810/180 - 12/180 = 810 - 12/180 = 798/180 - After reducing the fraction, the answer is 133/30
- In mixed form: 413/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/4-6/90 18/4-12/90 18/8-6/90 54/4-6/90 18/4-18/90 18/12-6/90 90/4-6/90 18/4-30/90 18/20-6/90 18/4-42/90 18/28-6/90