Subtract 18/21 from 50/6
1st number: 8 2/6, 2nd number: 18/21
50/6 - 18/21 is 157/21.
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,
50/6 = 50 × 7/6 × 7 = 350/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
18/21 = 18 × 2/21 × 2 = 36/42 - Subtract the two like fractions:
350/42 - 36/42 = 350 - 36/42 = 314/42 - After reducing the fraction, the answer is 157/21
- In mixed form: 710/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/6-36/21 50/12-18/21 50/6-18/42 50/6-54/21 50/18-18/21 50/6-18/63 50/6-90/21 50/30-18/21 50/42-18/21