Subtract 8/20 from 75/42
1st number: 1 33/42, 2nd number: 8/20
75/42 - 8/20 is 97/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
75/42 = 75 × 10/42 × 10 = 750/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
8/20 = 8 × 21/20 × 21 = 168/420 - Subtract the two like fractions:
750/420 - 168/420 = 750 - 168/420 = 582/420 - After reducing the fraction, the answer is 97/70
- In mixed form: 127/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/42-16/20 75/84-8/20 75/42-8/40 75/42-24/20 75/42-8/60 75/42-40/20 75/42-56/20