Subtract 8/21 from 75/6
1st number: 12 3/6, 2nd number: 8/21
75/6 - 8/21 is 509/42.
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,
75/6 = 75 × 7/6 × 7 = 525/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
8/21 = 8 × 2/21 × 2 = 16/42 - Subtract the two like fractions:
525/42 - 16/42 = 525 - 16/42 = 509/42 - In mixed form: 125/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/6-16/21 75/12-8/21 75/6-8/42 75/6-24/21 75/18-8/21 75/6-8/63 75/6-40/21 75/30-8/21 75/6-56/21 75/42-8/21