Subtract 4/90 from 18/6
1st number: 3 0/6, 2nd number: 4/90
18/6 - 4/90 is 133/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 6 × 15 = 90,
18/6 = 18 × 15/6 × 15 = 270/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
4/90 = 4 × 1/90 × 1 = 4/90 - Subtract the two like fractions:
270/90 - 4/90 = 270 - 4/90 = 266/90 - After reducing the fraction, the answer is 133/45
- In mixed form: 243/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/6-4/90 18/6-8/90 18/12-4/90 54/6-4/90 18/6-12/90 90/6-4/90 18/6-20/90 18/30-4/90 18/6-28/90 18/42-4/90