Subtract 84/36 from 8/18
1st number: 8/18, 2nd number: 2 12/36
8/18 - 84/36 is -17/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
8/18 = 8 × 2/18 × 2 = 16/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
84/36 = 84 × 1/36 × 1 = 84/36 - Subtract the two like fractions:
16/36 - 84/36 = 16 - 84/36 = -68/36 - After reducing the fraction, the answer is -17/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18-84/36 8/36-84/36 8/18-84/72 24/18-84/36 8/54-84/36 40/18-84/36 8/90-84/36 56/18-84/36