Subtract 45/18 from 7/14
1st number: 7/14, 2nd number: 2 9/18
7/14 - 45/18 is -2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 14 × 9 = 126,
7/14 = 7 × 9/14 × 9 = 63/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
45/18 = 45 × 7/18 × 7 = 315/126 - Subtract the two like fractions:
63/126 - 315/126 = 63 - 315/126 = -252/126 - After reducing the fraction, the answer is -2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 7/14-90/18 7/28-45/18 7/14-45/36 21/14-45/18 7/42-45/18 7/14-45/54 35/14-45/18 7/70-45/18 7/14-45/90 49/14-45/18 7/98-45/18