3(2k-3)=k+81

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Solution for 3(2k-3)=k+81 equation: 



3(2k-3)=k+81

We move all terms to the left:

3(2k-3)-(k+81)=0

We multiply parentheses

6k-(k+81)-9=0

We get rid of parentheses

6k-k-81-9=0

We add all the numbers together, and all the variables

5k-90=0

We move all terms containing k to the left, all other terms to the right

5k=90

k=90/5

k=18

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