Subtract 84/18 from 8/84
1st number: 8/84, 2nd number: 4 12/18
8/84 - 84/18 is -32/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
8/84 = 8 × 3/84 × 3 = 24/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
84/18 = 84 × 14/18 × 14 = 1176/252 - Subtract the two like fractions:
24/252 - 1176/252 = 24 - 1176/252 = -1152/252 - After reducing the fraction, the answer is -32/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/84-84/18 8/84-84/36 24/84-84/18 8/84-84/54 40/84-84/18 8/84-84/90 56/84-84/18