Subtract 12/9 from 6/30
1st number: 6/30, 2nd number: 1 3/9
6/30 - 12/9 is -17/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
6/30 = 6 × 3/30 × 3 = 18/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
12/9 = 12 × 10/9 × 10 = 120/90 - Subtract the two like fractions:
18/90 - 120/90 = 18 - 120/90 = -102/90 - After reducing the fraction, the answer is -17/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/30-12/9 6/30-24/9 6/60-12/9 6/30-12/18 18/30-12/9 6/30-36/9 6/90-12/9 6/30-12/27 6/30-60/9 6/30-12/45 42/30-12/9 6/30-84/9 6/30-12/63