Subtract 84/18 from 8/15
1st number: 8/15, 2nd number: 4 12/18
8/15 - 84/18 is -62/15.
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,
8/15 = 8 × 6/15 × 6 = 48/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
84/18 = 84 × 5/18 × 5 = 420/90 - Subtract the two like fractions:
48/90 - 420/90 = 48 - 420/90 = -372/90 - After reducing the fraction, the answer is -62/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/15-84/18 8/30-84/18 8/15-84/36 24/15-84/18 8/45-84/18 8/15-84/54 40/15-84/18 8/75-84/18 8/15-84/90 56/15-84/18