Subtract 21/18 from 3/50
1st number: 3/50, 2nd number: 1 3/18
3/50 - 21/18 is -83/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
3/50 = 3 × 9/50 × 9 = 27/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
21/18 = 21 × 25/18 × 25 = 525/450 - Subtract the two like fractions:
27/450 - 525/450 = 27 - 525/450 = -498/450 - After reducing the fraction, the answer is -83/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/50-21/18 3/50-42/18 3/50-21/36 9/50-21/18 3/50-63/18 3/50-21/54 15/50-21/18 3/50-21/90 21/50-21/18