Subtract 3/12 from 90/9
1st number: 10 0/9, 2nd number: 3/12
90/9 - 3/12 is 39/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
90/9 = 90 × 4/9 × 4 = 360/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
3/12 = 3 × 3/12 × 3 = 9/36 - Subtract the two like fractions:
360/36 - 9/36 = 360 - 9/36 = 351/36 - After reducing the fraction, the answer is 39/4
- In mixed form: 93/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/9-6/12 90/18-3/12 90/9-3/24 90/9-9/12 90/27-3/12 90/9-3/36 90/9-15/12 90/45-3/12 90/9-3/60 90/9-21/12 90/63-3/12 90/9-3/84