Subtract 80/20 from 28/14
1st number: 2 0/14, 2nd number: 4 0/20
28/14 - 80/20 is -2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 14 × 10 = 140,
28/14 = 28 × 10/14 × 10 = 280/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
80/20 = 80 × 7/20 × 7 = 560/140 - Subtract the two like fractions:
280/140 - 560/140 = 280 - 560/140 = -280/140 - After reducing the fraction, the answer is -2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/14-80/20 28/14-80/40 84/14-80/20 28/42-80/20 28/14-80/60 28/70-80/20 28/98-80/20