Subtract 20/5 from 28/14
1st number: 2 0/14, 2nd number: 4 0/5
28/14 - 20/5 is -2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 5 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 14 × 5 = 70,
28/14 = 28 × 5/14 × 5 = 140/70 - Likewise, for the 2nd fraction, since 5 × 14 = 70,
20/5 = 20 × 14/5 × 14 = 280/70 - Subtract the two like fractions:
140/70 - 280/70 = 140 - 280/70 = -140/70 - 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: 56/14-20/5 28/14-40/5 28/14-20/10 84/14-20/5 28/14-60/5 28/42-20/5 28/14-20/15 28/70-20/5 28/14-20/25 28/98-20/5 28/14-20/35