Subtract 15/12 from 12/45
1st number: 12/45, 2nd number: 1 3/12
12/45 - 15/12 is -59/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
12/45 = 12 × 4/45 × 4 = 48/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
15/12 = 15 × 15/12 × 15 = 225/180 - Subtract the two like fractions:
48/180 - 225/180 = 48 - 225/180 = -177/180 - After reducing the fraction, the answer is -59/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/45-15/12 12/45-30/12 12/90-15/12 12/45-15/24 36/45-15/12 12/45-45/12 12/45-15/36 60/45-15/12 12/45-75/12 12/45-15/60 84/45-15/12 12/45-15/84