Add 30/81 and 60/80
30/81 + 60/80 is 121/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 80 is 6480
Next, find the equivalent fraction of both fractional numbers with denominator 6480 - For the 1st fraction, since 81 × 80 = 6480,
30/81 = 30 × 80/81 × 80 = 2400/6480 - Likewise, for the 2nd fraction, since 80 × 81 = 6480,
60/80 = 60 × 81/80 × 81 = 4860/6480 - Add the two like fractions:
2400/6480 + 4860/6480 = 2400 + 4860/6480 = 7260/6480 - 7260/6480 simplified gives 121/108
- So, 30/81 + 60/80 = 121/108
In mixed form: 113/108
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