Subtract 75/20 from 90/14
1st number: 6 6/14, 2nd number: 3 15/20
90/14 - 75/20 is 75/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 14 × 10 = 140,
90/14 = 90 × 10/14 × 10 = 900/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
75/20 = 75 × 7/20 × 7 = 525/140 - Subtract the two like fractions:
900/140 - 525/140 = 900 - 525/140 = 375/140 - After reducing the fraction, the answer is 75/28
- In mixed form: 219/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28-75/20 90/14-75/40 90/42-75/20 90/14-75/60 90/70-75/20 90/98-75/20