6=20-2(2+a)

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Solution for 6=20-2(2+a) equation:



6=20-2(2+a)
We move all terms to the left:
6-(20-2(2+a))=0
We add all the numbers together, and all the variables
-(20-2(a+2))+6=0
We calculate terms in parentheses: -(20-2(a+2)), so:
20-2(a+2)
determiningTheFunctionDomain -2(a+2)+20
We multiply parentheses
-2a-4+20
We add all the numbers together, and all the variables
-2a+16
Back to the equation:
-(-2a+16)
We get rid of parentheses
2a-16+6=0
We add all the numbers together, and all the variables
2a-10=0
We move all terms containing a to the left, all other terms to the right
2a=10
a=10/2
a=5

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