Subtract 84/18 from 5/15
1st number: 5/15, 2nd number: 4 12/18
5/15 - 84/18 is -13/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
5/15 = 5 × 6/15 × 6 = 30/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
84/18 = 84 × 5/18 × 5 = 420/90 - Subtract the two like fractions:
30/90 - 420/90 = 30 - 420/90 = -390/90 - After reducing the fraction, the answer is -13/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/15-84/18 5/30-84/18 5/15-84/36 5/45-84/18 5/15-84/54 25/15-84/18 5/75-84/18 5/15-84/90 35/15-84/18