-84=k+4(3k+5)

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Solution for -84=k+4(3k+5) equation:



-84=k+4(3k+5)
We move all terms to the left:
-84-(k+4(3k+5))=0
We calculate terms in parentheses: -(k+4(3k+5)), so:
k+4(3k+5)
We multiply parentheses
k+12k+20
We add all the numbers together, and all the variables
13k+20
Back to the equation:
-(13k+20)
We get rid of parentheses
-13k-20-84=0
We add all the numbers together, and all the variables
-13k-104=0
We move all terms containing k to the left, all other terms to the right
-13k=104
k=104/-13
k=-8

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