Add 4/80 and 36/81
4/80 + 36/81 is 89/180.
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,
4/80 = 4 × 81/80 × 81 = 324/6480 - Likewise, for the 2nd fraction, since 81 × 80 = 6480,
36/81 = 36 × 80/81 × 80 = 2880/6480 - Add the two like fractions:
324/6480 + 2880/6480 = 324 + 2880/6480 = 3204/6480 - 3204/6480 simplified gives 89/180
- So, 4/80 + 36/81 = 89/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/80+36/81 4/80+72/81 12/80+36/81 20/80+36/81 28/80+36/81