Subtract 49/9 from 30/84
1st number: 30/84, 2nd number: 5 4/9
30/84 - 49/9 is -641/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
30/84 = 30 × 3/84 × 3 = 90/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
49/9 = 49 × 28/9 × 28 = 1372/252 - Subtract the two like fractions:
90/252 - 1372/252 = 90 - 1372/252 = -1282/252 - After reducing the fraction, the answer is -641/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/84-49/9 30/84-98/9 30/84-49/18 90/84-49/9 30/84-49/27 30/84-49/45 30/84-49/63