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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