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-21-6n=-7-7(-6+2n)
We move all terms to the left:
-21-6n-(-7-7(-6+2n))=0
We add all the numbers together, and all the variables
-6n-(-7-7(2n-6))-21=0
We calculate terms in parentheses: -(-7-7(2n-6)), so:We get rid of parentheses
-7-7(2n-6)
determiningTheFunctionDomain -7(2n-6)-7
We multiply parentheses
-14n+42-7
We add all the numbers together, and all the variables
-14n+35
Back to the equation:
-(-14n+35)
-6n+14n-35-21=0
We add all the numbers together, and all the variables
8n-56=0
We move all terms containing n to the left, all other terms to the right
8n=56
n=56/8
n=7
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