Subtract 9/30 from 28/7
1st number: 4 0/7, 2nd number: 9/30
28/7 - 9/30 is 37/10.
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,
9/30 = 9 × 7/30 × 7 = 63/210 - Subtract the two like fractions:
840/210 - 63/210 = 840 - 63/210 = 777/210 - After reducing the fraction, the answer is 37/10
- In mixed form: 37/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7-9/30 28/7-18/30 28/14-9/30 28/7-9/60 84/7-9/30 28/7-27/30 28/21-9/30 28/7-9/90 28/7-45/30 28/35-9/30 28/7-63/30 28/49-9/30