Subtract 18/5 from 30/12
1st number: 2 6/12, 2nd number: 3 3/5
30/12 - 18/5 is -11/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 5 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
30/12 = 30 × 5/12 × 5 = 150/60 - Likewise, for the 2nd fraction, since 5 × 12 = 60,
18/5 = 18 × 12/5 × 12 = 216/60 - Subtract the two like fractions:
150/60 - 216/60 = 150 - 216/60 = -66/60 - After reducing the fraction, the answer is -11/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12-18/5 30/12-36/5 30/24-18/5 30/12-18/10 90/12-18/5 30/12-54/5 30/36-18/5 30/12-18/15 30/12-90/5 30/60-18/5 30/12-18/25 30/84-18/5 30/12-18/35