Subtract 9/12 from 90/6
1st number: 15 0/6, 2nd number: 9/12
90/6 - 9/12 is 57/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 6 × 2 = 12,
90/6 = 90 × 2/6 × 2 = 180/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
9/12 = 9 × 1/12 × 1 = 9/12 - Subtract the two like fractions:
180/12 - 9/12 = 180 - 9/12 = 171/12 - After reducing the fraction, the answer is 57/4
- In mixed form: 141/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/6-18/12 90/12-9/12 90/6-9/24 90/6-27/12 90/18-9/12 90/6-9/36 90/6-45/12 90/30-9/12 90/6-9/60 90/6-63/12 90/42-9/12 90/6-9/84