Subtract 30/10 from 30/7
1st number: 4 2/7, 2nd number: 3 0/10
30/7 - 30/10 is 9/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
30/7 = 30 × 10/7 × 10 = 300/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
30/10 = 30 × 7/10 × 7 = 210/70 - Subtract the two like fractions:
300/70 - 210/70 = 300 - 210/70 = 90/70 - After reducing the fraction, the answer is 9/7
- In mixed form: 12/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/7-30/10 30/7-60/10 30/14-30/10 30/7-30/20 90/7-30/10 30/7-90/10 30/21-30/10 30/35-30/10 30/7-30/50 30/49-30/10 30/7-30/70