Subtract 21/54 from 50/30
1st number: 1 20/30, 2nd number: 21/54
50/30 - 21/54 is 23/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
50/30 = 50 × 9/30 × 9 = 450/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
21/54 = 21 × 5/54 × 5 = 105/270 - Subtract the two like fractions:
450/270 - 105/270 = 450 - 105/270 = 345/270 - After reducing the fraction, the answer is 23/18
- In mixed form: 15/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/30-42/54 50/60-21/54 50/30-63/54 50/90-21/54