Subtract 42/84 from 12/6
1st number: 2 0/6, 2nd number: 42/84
12/6 - 42/84 is 3/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 6 × 14 = 84,
12/6 = 12 × 14/6 × 14 = 168/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
42/84 = 42 × 1/84 × 1 = 42/84 - Subtract the two like fractions:
168/84 - 42/84 = 168 - 42/84 = 126/84 - After reducing the fraction, the answer is 3/2
- In mixed form: 11/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/6-42/84 36/6-42/84 12/18-42/84 60/6-42/84 12/30-42/84 84/6-42/84 12/42-42/84