Subtract 8/30 from 28/7
1st number: 4 0/7, 2nd number: 8/30
28/7 - 8/30 is 56/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 7 × 30 = 210,
28/7 = 28 × 30/7 × 30 = 840/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
8/30 = 8 × 7/30 × 7 = 56/210 - Subtract the two like fractions:
840/210 - 56/210 = 840 - 56/210 = 784/210 - After reducing the fraction, the answer is 56/15
- In mixed form: 311/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7-8/30 28/7-16/30 28/14-8/30 28/7-8/60 84/7-8/30 28/7-24/30 28/21-8/30 28/7-8/90 28/7-40/30 28/35-8/30 28/7-56/30 28/49-8/30