Subtract 42/30 from 3/6
1st number: 3/6, 2nd number: 1 12/30
3/6 - 42/30 is -9/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 6 × 5 = 30,
3/6 = 3 × 5/6 × 5 = 15/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
42/30 = 42 × 1/30 × 1 = 42/30 - Subtract the two like fractions:
15/30 - 42/30 = 15 - 42/30 = -27/30 - After reducing the fraction, the answer is -9/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 3/6-84/30 3/12-42/30 3/6-42/60 9/6-42/30 3/18-42/30 3/6-42/90 15/6-42/30 3/30-42/30 21/6-42/30 3/42-42/30