Subtract 50/21 from 30/6
1st number: 5 0/6, 2nd number: 2 8/21
30/6 - 50/21 is 55/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
30/6 = 30 × 7/6 × 7 = 210/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
50/21 = 50 × 2/21 × 2 = 100/42 - Subtract the two like fractions:
210/42 - 100/42 = 210 - 100/42 = 110/42 - After reducing the fraction, the answer is 55/21
- In mixed form: 213/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/6-50/21 30/12-50/21 30/6-50/42 90/6-50/21 30/18-50/21 30/6-50/63 30/42-50/21