Subtract 30/81 from 9/50
9/50 - 30/81 is -257/1350.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 81 is 4050
Next, find the equivalent fraction of both fractional numbers with denominator 4050 - For the 1st fraction, since 50 × 81 = 4050,
9/50 = 9 × 81/50 × 81 = 729/4050 - Likewise, for the 2nd fraction, since 81 × 50 = 4050,
30/81 = 30 × 50/81 × 50 = 1500/4050 - Subtract the two like fractions:
729/4050 - 1500/4050 = 729 - 1500/4050 = -771/4050 - After reducing the fraction, the answer is -257/1350
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/50-30/81 9/50-60/81 27/50-30/81 9/50-90/81 45/50-30/81 63/50-30/81