Subtract 20/10 from 28/7
1st number: 4 0/7, 2nd number: 2 0/10
28/7 - 20/10 is 2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
28/7 = 28 × 10/7 × 10 = 280/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
20/10 = 20 × 7/10 × 7 = 140/70 - Subtract the two like fractions:
280/70 - 140/70 = 280 - 140/70 = 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: 56/7-20/10 28/7-40/10 28/14-20/10 84/7-20/10 28/7-60/10 28/21-20/10 28/7-20/30 28/35-20/10 28/7-20/50 28/49-20/10 28/7-20/70