Subtract 18/48 from 21/9
1st number: 2 3/9, 2nd number: 18/48
21/9 - 18/48 is 47/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 48 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 9 × 16 = 144,
21/9 = 21 × 16/9 × 16 = 336/144 - Likewise, for the 2nd fraction, since 48 × 3 = 144,
18/48 = 18 × 3/48 × 3 = 54/144 - Subtract the two like fractions:
336/144 - 54/144 = 336 - 54/144 = 282/144 - After reducing the fraction, the answer is 47/24
- In mixed form: 123/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/9-18/48 21/9-36/48 21/18-18/48 21/9-18/96 63/9-18/48 21/9-54/48 21/27-18/48 21/9-90/48 21/45-18/48 21/63-18/48