Subtract 45/12 from 30/14
1st number: 2 2/14, 2nd number: 3 9/12
30/14 - 45/12 is -45/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 14 × 6 = 84,
30/14 = 30 × 6/14 × 6 = 180/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
45/12 = 45 × 7/12 × 7 = 315/84 - Subtract the two like fractions:
180/84 - 315/84 = 180 - 315/84 = -135/84 - After reducing the fraction, the answer is -45/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/14-45/12 30/14-90/12 30/28-45/12 30/14-45/24 90/14-45/12 30/42-45/12 30/14-45/36 30/70-45/12 30/14-45/60 30/98-45/12 30/14-45/84