Subtract 30/70 from 35/21
1st number: 1 14/21, 2nd number: 30/70
35/21 - 30/70 is 26/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
35/21 = 35 × 10/21 × 10 = 350/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
30/70 = 30 × 3/70 × 3 = 90/210 - Subtract the two like fractions:
350/210 - 90/210 = 350 - 90/210 = 260/210 - After reducing the fraction, the answer is 26/21
- In mixed form: 15/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21-30/70 35/21-60/70 35/42-30/70 35/21-90/70 35/63-30/70