Subtract 35/21 from 3/30
1st number: 3/30, 2nd number: 1 14/21
3/30 - 35/21 is -47/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
3/30 = 3 × 7/30 × 7 = 21/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
35/21 = 35 × 10/21 × 10 = 350/210 - Subtract the two like fractions:
21/210 - 350/210 = 21 - 350/210 = -329/210 - After reducing the fraction, the answer is -47/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/30-35/21 3/30-70/21 3/60-35/21 3/30-35/42 9/30-35/21 3/90-35/21 3/30-35/63 15/30-35/21 21/30-35/21