Subtract 18/84 from 15/36
15/36 - 18/84 is 17/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
15/36 = 15 × 7/36 × 7 = 105/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
18/84 = 18 × 3/84 × 3 = 54/252 - Subtract the two like fractions:
105/252 - 54/252 = 105 - 54/252 = 51/252 - After reducing the fraction, the answer is 17/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/36-18/84 15/36-36/84 15/72-18/84 45/36-18/84 15/36-54/84 75/36-18/84 15/36-90/84