Subtract 16/18 from 7/84
7/84 - 16/18 is -29/36.
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,
7/84 = 7 × 3/84 × 3 = 21/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
16/18 = 16 × 14/18 × 14 = 224/252 - Subtract the two like fractions:
21/252 - 224/252 = 21 - 224/252 = -203/252 - After reducing the fraction, the answer is -29/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/84-16/18 7/84-32/18 7/84-16/36 21/84-16/18 7/84-48/18 7/84-16/54 35/84-16/18 7/84-80/18 7/84-16/90 49/84-16/18