Subtract 30/42 from 30/12
1st number: 2 6/12, 2nd number: 30/42
30/12 - 30/42 is 25/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
30/12 = 30 × 7/12 × 7 = 210/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
30/42 = 30 × 2/42 × 2 = 60/84 - Subtract the two like fractions:
210/84 - 60/84 = 210 - 60/84 = 150/84 - After reducing the fraction, the answer is 25/14
- In mixed form: 111/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12-30/42 30/12-60/42 30/24-30/42 30/12-30/84 90/12-30/42 30/12-90/42 30/36-30/42 30/60-30/42 30/84-30/42