Subtract 30/6 from 42/12
1st number: 3 6/12, 2nd number: 5 0/6
42/12 - 30/6 is -3/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 6 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 12 × 1 = 12,
42/12 = 42 × 1/12 × 1 = 42/12 - Likewise, for the 2nd fraction, since 6 × 2 = 12,
30/6 = 30 × 2/6 × 2 = 60/12 - Subtract the two like fractions:
42/12 - 60/12 = 42 - 60/12 = -18/12 - After reducing the fraction, the answer is -3/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12-30/6 42/12-60/6 42/24-30/6 42/12-30/12 42/12-90/6 42/36-30/6 42/12-30/18 42/60-30/6 42/84-30/6 42/12-30/42