Subtract 4/20 from 42/6
1st number: 7 0/6, 2nd number: 4/20
42/6 - 4/20 is 34/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 6 × 10 = 60,
42/6 = 42 × 10/6 × 10 = 420/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
4/20 = 4 × 3/20 × 3 = 12/60 - Subtract the two like fractions:
420/60 - 12/60 = 420 - 12/60 = 408/60 - After reducing the fraction, the answer is 34/5
- In mixed form: 64/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/6-4/20 42/6-8/20 42/12-4/20 42/6-4/40 42/6-12/20 42/18-4/20 42/6-4/60 42/30-4/20 42/6-28/20