Subtract 50/18 from 21/4
1st number: 5 1/4, 2nd number: 2 14/18
21/4 - 50/18 is 89/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
21/4 = 21 × 9/4 × 9 = 189/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
50/18 = 50 × 2/18 × 2 = 100/36 - Subtract the two like fractions:
189/36 - 100/36 = 189 - 100/36 = 89/36 - In mixed form: 217/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4-50/18 21/8-50/18 21/4-50/36 63/4-50/18 21/12-50/18 21/4-50/54 21/20-50/18 21/4-50/90 21/28-50/18