Add 60/80 and 90/81
1st number: 60/80, 2nd number: 1 9/81
60/80 + 90/81 is 67/36.
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,
60/80 = 60 × 81/80 × 81 = 4860/6480 - Likewise, for the 2nd fraction, since 81 × 80 = 6480,
90/81 = 90 × 80/81 × 80 = 7200/6480 - Add the two like fractions:
4860/6480 + 7200/6480 = 4860 + 7200/6480 = 12060/6480 - 12060/6480 simplified gives 67/36
- So, 60/80 + 90/81 = 67/36
In mixed form: 131/36
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