Subtract 18/12 from 45/5
1st number: 9 0/5, 2nd number: 1 6/12
45/5 - 18/12 is 15/2.
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,
45/5 = 45 × 12/5 × 12 = 540/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
18/12 = 18 × 5/12 × 5 = 90/60 - Subtract the two like fractions:
540/60 - 90/60 = 540 - 90/60 = 450/60 - After reducing the fraction, the answer is 15/2
- In mixed form: 71/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/5-18/12 45/5-36/12 45/10-18/12 45/5-18/24 45/5-54/12 45/15-18/12 45/5-18/36 45/5-90/12 45/25-18/12 45/5-18/60 45/35-18/12 45/5-18/84