Subtract 21/9 from 49/75
1st number: 49/75, 2nd number: 2 3/9
49/75 - 21/9 is -42/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 9 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 75 × 3 = 225,
49/75 = 49 × 3/75 × 3 = 147/225 - Likewise, for the 2nd fraction, since 9 × 25 = 225,
21/9 = 21 × 25/9 × 25 = 525/225 - Subtract the two like fractions:
147/225 - 525/225 = 147 - 525/225 = -378/225 - After reducing the fraction, the answer is -42/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/75-21/9 49/75-42/9 49/75-21/18 49/75-63/9 49/75-21/27 49/75-21/45 49/75-21/63