Subtract 18/90 from 18/3
1st number: 6 0/3, 2nd number: 18/90
18/3 - 18/90 is 29/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 3 × 30 = 90,
18/3 = 18 × 30/3 × 30 = 540/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
18/90 = 18 × 1/90 × 1 = 18/90 - Subtract the two like fractions:
540/90 - 18/90 = 540 - 18/90 = 522/90 - After reducing the fraction, the answer is 29/5
- In mixed form: 54/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/3-18/90 18/3-36/90 18/6-18/90 54/3-18/90 18/3-54/90 18/9-18/90 90/3-18/90 18/15-18/90 18/21-18/90