Add 36/80 and 40/81
36/80 + 40/81 is 1529/1620.
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,
36/80 = 36 × 81/80 × 81 = 2916/6480 - Likewise, for the 2nd fraction, since 81 × 80 = 6480,
40/81 = 40 × 80/81 × 80 = 3200/6480 - Add the two like fractions:
2916/6480 + 3200/6480 = 2916 + 3200/6480 = 6116/6480 - 6116/6480 simplified gives 1529/1620
- So, 36/80 + 40/81 = 1529/1620
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/80+40/81 36/80+80/81