Subtract 32/80 from 20/12
1st number: 1 8/12, 2nd number: 32/80
20/12 - 32/80 is 19/15.
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,
20/12 = 20 × 20/12 × 20 = 400/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
32/80 = 32 × 3/80 × 3 = 96/240 - Subtract the two like fractions:
400/240 - 96/240 = 400 - 96/240 = 304/240 - After reducing the fraction, the answer is 19/15
- In mixed form: 14/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12-32/80 20/12-64/80 20/24-32/80 60/12-32/80 20/12-96/80 20/36-32/80 20/60-32/80 20/84-32/80