Subtract 20/4 from 42/6
1st number: 7 0/6, 2nd number: 5 0/4
42/6 - 20/4 is 2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 4 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 6 × 2 = 12,
42/6 = 42 × 2/6 × 2 = 84/12 - Likewise, for the 2nd fraction, since 4 × 3 = 12,
20/4 = 20 × 3/4 × 3 = 60/12 - Subtract the two like fractions:
84/12 - 60/12 = 84 - 60/12 = 24/12 - After reducing the fraction, the answer is 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/6-20/4 42/6-40/4 42/12-20/4 42/6-20/8 42/6-60/4 42/18-20/4 42/6-20/12 42/30-20/4 42/6-20/28