Subtract 75/21 from 49/9
1st number: 5 4/9, 2nd number: 3 12/21
49/9 - 75/21 is 118/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
49/9 = 49 × 7/9 × 7 = 343/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
75/21 = 75 × 3/21 × 3 = 225/63 - Subtract the two like fractions:
343/63 - 225/63 = 343 - 225/63 = 118/63 - In mixed form: 155/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/9-75/21 49/18-75/21 49/9-75/42 49/27-75/21 49/9-75/63 49/45-75/21 49/63-75/21