Subtract 75/7 from 30/3
1st number: 10 0/3, 2nd number: 10 5/7
30/3 - 75/7 is -5/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
30/3 = 30 × 7/3 × 7 = 210/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
75/7 = 75 × 3/7 × 3 = 225/21 - Subtract the two like fractions:
210/21 - 225/21 = 210 - 225/21 = -15/21 - After reducing the fraction, the answer is -5/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/3-75/7 30/6-75/7 30/3-75/14 90/3-75/7 30/9-75/7 30/3-75/21 30/15-75/7 30/3-75/35 30/21-75/7 30/3-75/49