Subtract 45/12 from 1/2
1st number: 1/2, 2nd number: 3 9/12
1/2 - 45/12 is -13/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 2 × 6 = 12,
1/2 = 1 × 6/2 × 6 = 6/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
45/12 = 45 × 1/12 × 1 = 45/12 - Subtract the two like fractions:
6/12 - 45/12 = 6 - 45/12 = -39/12 - After reducing the fraction, the answer is -13/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 1/2-90/12 1/4-45/12 1/2-45/24 3/2-45/12 1/6-45/12 1/2-45/36 5/2-45/12 1/10-45/12 1/2-45/60 7/2-45/12 1/14-45/12 1/2-45/84