Add 64/7 and 84/9
1st number: 9 1/7, 2nd number: 9 3/9
64/7 + 84/9 is 388/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
64/7 = 64 × 9/7 × 9 = 576/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
84/9 = 84 × 7/9 × 7 = 588/63 - Add the two like fractions:
576/63 + 588/63 = 576 + 588/63 = 1164/63 - 1164/63 simplified gives 388/21
- So, 64/7 + 84/9 = 388/21
In mixed form: 1810/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/14+84/9 64/7+84/18 64/21+84/9 64/7+84/27 64/35+84/9 64/7+84/45 64/49+84/9 64/7+84/63