Add 2/80 and 7/81
2/80 + 7/81 is 361/3240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 81 is 6480
Next, find the equivalent fraction of both fractional numbers with denominator 6480 - For the 1st fraction, since 80 × 81 = 6480,
2/80 = 2 × 81/80 × 81 = 162/6480 - Likewise, for the 2nd fraction, since 81 × 80 = 6480,
7/81 = 7 × 80/81 × 80 = 560/6480 - Add the two like fractions:
162/6480 + 560/6480 = 162 + 560/6480 = 722/6480 - 722/6480 simplified gives 361/3240
- So, 2/80 + 7/81 = 361/3240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/80+7/81 2/80+14/81 6/80+7/81 2/80+21/81 10/80+7/81 2/80+35/81 14/80+7/81 2/80+49/81