Subtract 50/63 from 81/84
81/84 - 50/63 is 43/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 63 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 63 × 4 = 252,
50/63 = 50 × 4/63 × 4 = 200/252 - Subtract the two like fractions:
243/252 - 200/252 = 243 - 200/252 = 43/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: