Subtract 30/12 from 4/5
1st number: 4/5, 2nd number: 2 6/12
4/5 - 30/12 is -17/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
4/5 = 4 × 12/5 × 12 = 48/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
30/12 = 30 × 5/12 × 5 = 150/60 - Subtract the two like fractions:
48/60 - 150/60 = 48 - 150/60 = -102/60 - After reducing the fraction, the answer is -17/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/5-30/12 4/5-60/12 4/10-30/12 4/5-30/24 12/5-30/12 4/5-90/12 4/15-30/12 4/5-30/36 20/5-30/12 4/25-30/12 4/5-30/60 28/5-30/12 4/35-30/12 4/5-30/84