Add 45/7 and 6/9
1st number: 6 3/7, 2nd number: 6/9
45/7 + 6/9 is 149/21.
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,
45/7 = 45 × 9/7 × 9 = 405/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
6/9 = 6 × 7/9 × 7 = 42/63 - Add the two like fractions:
405/63 + 42/63 = 405 + 42/63 = 447/63 - 447/63 simplified gives 149/21
- So, 45/7 + 6/9 = 149/21
In mixed form: 72/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/7+6/9 45/7+12/9 45/14+6/9 45/7+6/18 45/7+18/9 45/21+6/9 45/7+6/27 45/7+30/9 45/35+6/9 45/7+6/45 45/7+42/9 45/49+6/9 45/7+6/63