Subtract 27/28 from 70/20
1st number: 3 10/20, 2nd number: 27/28
70/20 - 27/28 is 71/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
70/20 = 70 × 7/20 × 7 = 490/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
27/28 = 27 × 5/28 × 5 = 135/140 - Subtract the two like fractions:
490/140 - 135/140 = 490 - 135/140 = 355/140 - After reducing the fraction, the answer is 71/28
- In mixed form: 215/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/20-54/28 70/40-27/28 70/20-27/56 70/20-81/28 70/60-27/28 70/20-27/84