Subtract 45/12 from 6/30
1st number: 6/30, 2nd number: 3 9/12
6/30 - 45/12 is -71/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
6/30 = 6 × 2/30 × 2 = 12/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
45/12 = 45 × 5/12 × 5 = 225/60 - Subtract the two like fractions:
12/60 - 225/60 = 12 - 225/60 = -213/60 - After reducing the fraction, the answer is -71/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/30-45/12 6/30-90/12 6/60-45/12 6/30-45/24 18/30-45/12 6/90-45/12 6/30-45/36 6/30-45/60 42/30-45/12 6/30-45/84