Subtract 48/18 from 21/2
1st number: 10 1/2, 2nd number: 2 12/18
21/2 - 48/18 is 47/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 2 × 9 = 18,
21/2 = 21 × 9/2 × 9 = 189/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
48/18 = 48 × 1/18 × 1 = 48/18 - Subtract the two like fractions:
189/18 - 48/18 = 189 - 48/18 = 141/18 - After reducing the fraction, the answer is 47/6
- In mixed form: 75/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2-48/18 21/2-96/18 21/4-48/18 21/2-48/36 63/2-48/18 21/6-48/18 21/2-48/54 21/10-48/18 21/2-48/90 21/14-48/18