Subtract 50/81 from 84/45
1st number: 1 39/45, 2nd number: 50/81
84/45 - 50/81 is 506/405.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 45 × 9 = 405,
84/45 = 84 × 9/45 × 9 = 756/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
50/81 = 50 × 5/81 × 5 = 250/405 - Subtract the two like fractions:
756/405 - 250/405 = 756 - 250/405 = 506/405 - In mixed form: 1101/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/90-50/81