Subtract 6/21 from 90/25
1st number: 3 15/25, 2nd number: 6/21
90/25 - 6/21 is 116/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 25 × 21 = 525,
90/25 = 90 × 21/25 × 21 = 1890/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
6/21 = 6 × 25/21 × 25 = 150/525 - Subtract the two like fractions:
1890/525 - 150/525 = 1890 - 150/525 = 1740/525 - After reducing the fraction, the answer is 116/35
- In mixed form: 311/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/25-12/21 90/50-6/21 90/25-6/42 90/25-18/21 90/75-6/21 90/25-6/63 90/25-30/21 90/25-42/21