Subtract 3/30 from 28/7
1st number: 4 0/7, 2nd number: 3/30
28/7 - 3/30 is 39/10.
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,
3/30 = 3 × 7/30 × 7 = 21/210 - Subtract the two like fractions:
840/210 - 21/210 = 840 - 21/210 = 819/210 - After reducing the fraction, the answer is 39/10
- In mixed form: 39/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7-3/30 28/7-6/30 28/14-3/30 28/7-3/60 84/7-3/30 28/7-9/30 28/21-3/30 28/7-3/90 28/7-15/30 28/35-3/30 28/7-21/30 28/49-3/30