7(9+k)=84+6k

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Solution for 7(9+k)=84+6k equation: 



7(9+k)=84+6k

We move all terms to the left:

7(9+k)-(84+6k)=0

We add all the numbers together, and all the variables

7(k+9)-(6k+84)=0

We multiply parentheses

7k-(6k+84)+63=0

We get rid of parentheses

7k-6k-84+63=0

We add all the numbers together, and all the variables

k-21=0

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

k=21

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