Subtract 10/18 from 81/84
81/84 - 10/18 is 103/252.
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,
81/84 = 81 × 3/84 × 3 = 243/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
10/18 = 10 × 14/18 × 14 = 140/252 - Subtract the two like fractions:
243/252 - 140/252 = 243 - 140/252 = 103/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/84-20/18 81/84-10/36 81/84-30/18 81/84-10/54 81/84-50/18 81/84-10/90 81/84-70/18