Add 45/81 and 8/9
45/81 + 8/9 is 13/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 9 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 81 × 1 = 81,
45/81 = 45 × 1/81 × 1 = 45/81 - Likewise, for the 2nd fraction, since 9 × 9 = 81,
8/9 = 8 × 9/9 × 9 = 72/81 - Add the two like fractions:
45/81 + 72/81 = 45 + 72/81 = 117/81 - 117/81 simplified gives 13/9
- So, 45/81 + 8/9 = 13/9
In mixed form: 14/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/81+8/9 45/81+16/9 45/81+8/18 45/81+24/9 45/81+8/27 45/81+40/9 45/81+8/45 45/81+56/9 45/81+8/63