Subtract 9/12 from 80/4
1st number: 20 0/4, 2nd number: 9/12
80/4 - 9/12 is 77/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 4 × 3 = 12,
80/4 = 80 × 3/4 × 3 = 240/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
9/12 = 9 × 1/12 × 1 = 9/12 - Subtract the two like fractions:
240/12 - 9/12 = 240 - 9/12 = 231/12 - After reducing the fraction, the answer is 77/4
- In mixed form: 191/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/4-18/12 80/8-9/12 80/4-9/24 80/4-27/12 80/12-9/12 80/4-9/36 80/4-45/12 80/20-9/12 80/4-9/60 80/4-63/12 80/28-9/12 80/4-9/84