Subtract 30/70 from 28/3
1st number: 9 1/3, 2nd number: 30/70
28/3 - 30/70 is 187/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 3 × 70 = 210,
28/3 = 28 × 70/3 × 70 = 1960/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
30/70 = 30 × 3/70 × 3 = 90/210 - Subtract the two like fractions:
1960/210 - 90/210 = 1960 - 90/210 = 1870/210 - After reducing the fraction, the answer is 187/21
- In mixed form: 819/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/3-30/70 28/3-60/70 28/6-30/70 84/3-30/70 28/3-90/70 28/9-30/70 28/15-30/70 28/21-30/70