Subtract 5/7 from 84/9
1st number: 9 3/9, 2nd number: 5/7
84/9 - 5/7 is 181/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
84/9 = 84 × 7/9 × 7 = 588/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
5/7 = 5 × 9/7 × 9 = 45/63 - Subtract the two like fractions:
588/63 - 45/63 = 588 - 45/63 = 543/63 - After reducing the fraction, the answer is 181/21
- In mixed form: 813/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9-10/7 84/18-5/7 84/9-5/14 84/9-15/7 84/27-5/7 84/9-5/21 84/9-25/7 84/45-5/7 84/9-5/35 84/9-35/7 84/63-5/7 84/9-5/49