-7(3+3k)=-21+8

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Solution for -7(3+3k)=-21+8 equation: 



-7(3+3k)=-21+8

We move all terms to the left:

-7(3+3k)-(-21+8)=0

We add all the numbers together, and all the variables

-7(3k+3)-(-13)=0

We add all the numbers together, and all the variables

-7(3k+3)+13=0

We multiply parentheses

-21k-21+13=0

We add all the numbers together, and all the variables

-21k-8=0

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

-21k=8

k=8/-21

k=-8/21

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