Subtract 3/30 from 12/9
1st number: 1 3/9, 2nd number: 3/30
12/9 - 3/30 is 37/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
12/9 = 12 × 10/9 × 10 = 120/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
3/30 = 3 × 3/30 × 3 = 9/90 - Subtract the two like fractions:
120/90 - 9/90 = 120 - 9/90 = 111/90 - After reducing the fraction, the answer is 37/30
- In mixed form: 17/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/9-3/30 12/9-6/30 12/18-3/30 12/9-3/60 36/9-3/30 12/9-9/30 12/27-3/30 12/9-3/90 60/9-3/30 12/9-15/30 12/45-3/30 84/9-3/30 12/9-21/30 12/63-3/30