7(9+k)=81-2k

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Solution for 7(9+k)=81-2k equation: 



7(9+k)=81-2k

We move all terms to the left:

7(9+k)-(81-2k)=0

We add all the numbers together, and all the variables

7(k+9)-(-2k+81)=0

We multiply parentheses

7k-(-2k+81)+63=0

We get rid of parentheses

7k+2k-81+63=0

We add all the numbers together, and all the variables

9k-18=0

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

9k=18

k=18/9

k=2

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