Add 3/7 and 8/9
3/7 + 8/9 is 83/63.
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,
3/7 = 3 × 9/7 × 9 = 27/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
8/9 = 8 × 7/9 × 7 = 56/63 - Add the two like fractions:
27/63 + 56/63 = 27 + 56/63 = 83/63 - So, 3/7 + 8/9 = 83/63
In mixed form: 120/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/7+8/9 3/7+16/9 3/14+8/9 3/7+8/18 9/7+8/9 3/7+24/9 3/21+8/9 3/7+8/27 15/7+8/9 3/7+40/9 3/35+8/9 3/7+8/45 21/7+8/9 3/7+56/9 3/49+8/9 3/7+8/63