-21=-5+2(k+9)

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Solution for -21=-5+2(k+9) equation:



-21=-5+2(k+9)
We move all terms to the left:
-21-(-5+2(k+9))=0
We calculate terms in parentheses: -(-5+2(k+9)), so:
-5+2(k+9)
determiningTheFunctionDomain 2(k+9)-5
We multiply parentheses
2k+18-5
We add all the numbers together, and all the variables
2k+13
Back to the equation:
-(2k+13)
We get rid of parentheses
-2k-13-21=0
We add all the numbers together, and all the variables
-2k-34=0
We move all terms containing k to the left, all other terms to the right
-2k=34
k=34/-2
k=-17

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