8k=7(-k+20)-5

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Solution for 8k=7(-k+20)-5 equation: 



8k=7(-k+20)-5

We move all terms to the left:

8k-(7(-k+20)-5)=0

We add all the numbers together, and all the variables

8k-(7(-1k+20)-5)=0



We calculate terms in parentheses: -(7(-1k+20)-5), so:

7(-1k+20)-5

We multiply parentheses

-7k+140-5

We add all the numbers together, and all the variables

-7k+135

Back to the equation:

-(-7k+135)



We get rid of parentheses

8k+7k-135=0

We add all the numbers together, and all the variables

15k-135=0

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

15k=135

k=135/15

k=9

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