Subtract 21/50 from 15/9
1st number: 1 6/9, 2nd number: 21/50
15/9 - 21/50 is 187/150.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 9 × 50 = 450,
15/9 = 15 × 50/9 × 50 = 750/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
21/50 = 21 × 9/50 × 9 = 189/450 - Subtract the two like fractions:
750/450 - 189/450 = 750 - 189/450 = 561/450 - After reducing the fraction, the answer is 187/150
- In mixed form: 137/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/9-21/50 15/9-42/50 15/18-21/50 45/9-21/50 15/9-63/50 15/27-21/50 75/9-21/50 15/45-21/50 15/63-21/50