Subtract 70/20 from 6/28
1st number: 6/28, 2nd number: 3 10/20
6/28 - 70/20 is -23/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
6/28 = 6 × 5/28 × 5 = 30/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
70/20 = 70 × 7/20 × 7 = 490/140 - Subtract the two like fractions:
30/140 - 490/140 = 30 - 490/140 = -460/140 - After reducing the fraction, the answer is -23/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/28-70/20 6/56-70/20 6/28-70/40 18/28-70/20 6/84-70/20 6/28-70/60 30/28-70/20 42/28-70/20