Subtract 8/20 from 70/28
1st number: 2 14/28, 2nd number: 8/20
70/28 - 8/20 is 21/10.
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,
70/28 = 70 × 5/28 × 5 = 350/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
8/20 = 8 × 7/20 × 7 = 56/140 - Subtract the two like fractions:
350/140 - 56/140 = 350 - 56/140 = 294/140 - After reducing the fraction, the answer is 21/10
- In mixed form: 21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/28-16/20 70/56-8/20 70/28-8/40 70/28-24/20 70/84-8/20 70/28-8/60 70/28-40/20 70/28-56/20