Subtract 48/80 from 20/12
1st number: 1 8/12, 2nd number: 48/80
20/12 - 48/80 is 16/15.
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,
48/80 = 48 × 3/80 × 3 = 144/240 - Subtract the two like fractions:
400/240 - 144/240 = 400 - 144/240 = 256/240 - After reducing the fraction, the answer is 16/15
- In mixed form: 11/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12-48/80 20/12-96/80 20/24-48/80 60/12-48/80 20/36-48/80 20/60-48/80 20/84-48/80