Subtract 49/30 from 42/12
1st number: 3 6/12, 2nd number: 1 19/30
42/12 - 49/30 is 28/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
42/12 = 42 × 5/12 × 5 = 210/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
49/30 = 49 × 2/30 × 2 = 98/60 - Subtract the two like fractions:
210/60 - 98/60 = 210 - 98/60 = 112/60 - After reducing the fraction, the answer is 28/15
- In mixed form: 113/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12-49/30 42/12-98/30 42/24-49/30 42/12-49/60 42/36-49/30 42/12-49/90 42/60-49/30 42/84-49/30