Subtract 42/6 from 1/20
1st number: 1/20, 2nd number: 7 0/6
1/20 - 42/6 is -139/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 6 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
1/20 = 1 × 3/20 × 3 = 3/60 - Likewise, for the 2nd fraction, since 6 × 10 = 60,
42/6 = 42 × 10/6 × 10 = 420/60 - Subtract the two like fractions:
3/60 - 420/60 = 3 - 420/60 = -417/60 - After reducing the fraction, the answer is -139/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20-42/6 1/20-84/6 1/40-42/6 1/20-42/12 3/20-42/6 1/60-42/6 1/20-42/18 5/20-42/6 1/20-42/30 7/20-42/6