Subtract 8/35 from 30/21
1st number: 1 9/21, 2nd number: 8/35
30/21 - 8/35 is 6/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
30/21 = 30 × 5/21 × 5 = 150/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
8/35 = 8 × 3/35 × 3 = 24/105 - Subtract the two like fractions:
150/105 - 24/105 = 150 - 24/105 = 126/105 - After reducing the fraction, the answer is 6/5
- In mixed form: 11/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21-8/35 30/21-16/35 30/42-8/35 30/21-8/70 90/21-8/35 30/21-24/35 30/63-8/35 30/21-40/35 30/21-56/35