Subtract 9/80 from 30/12
1st number: 2 6/12, 2nd number: 9/80
30/12 - 9/80 is 191/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 12 × 20 = 240,
30/12 = 30 × 20/12 × 20 = 600/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
9/80 = 9 × 3/80 × 3 = 27/240 - Subtract the two like fractions:
600/240 - 27/240 = 600 - 27/240 = 573/240 - After reducing the fraction, the answer is 191/80
- In mixed form: 231/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12-9/80 30/12-18/80 30/24-9/80 90/12-9/80 30/12-27/80 30/36-9/80 30/12-45/80 30/60-9/80 30/12-63/80 30/84-9/80