Add 64/80 and 7/9
64/80 + 7/9 is 71/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 9 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
64/80 = 64 × 9/80 × 9 = 576/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
7/9 = 7 × 80/9 × 80 = 560/720 - Add the two like fractions:
576/720 + 560/720 = 576 + 560/720 = 1136/720 - 1136/720 simplified gives 71/45
- So, 64/80 + 7/9 = 71/45
In mixed form: 126/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/80+14/9 64/80+7/18 64/80+21/9 64/80+7/27 64/80+35/9 64/80+7/45 64/80+49/9 64/80+7/63