Subtract 42/20 from 12/6
1st number: 2 0/6, 2nd number: 2 2/20
12/6 - 42/20 is -1/10.
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,
12/6 = 12 × 10/6 × 10 = 120/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
42/20 = 42 × 3/20 × 3 = 126/60 - Subtract the two like fractions:
120/60 - 126/60 = 120 - 126/60 = -6/60 - After reducing the fraction, the answer is -1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/6-42/20 12/6-84/20 12/6-42/40 36/6-42/20 12/18-42/20 12/6-42/60 60/6-42/20 12/30-42/20 84/6-42/20 12/42-42/20