4=2(a+1)

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Solution for 4=2(a+1) equation: 



4=2(a+1)

We move all terms to the left:

4-(2(a+1))=0



We calculate terms in parentheses: -(2(a+1)), so:

2(a+1)

We multiply parentheses

2a+2

Back to the equation:

-(2a+2)



We get rid of parentheses

-2a-2+4=0

We add all the numbers together, and all the variables

-2a+2=0

We move all terms containing a to the left, all other terms to the right

-2a=-2

a=-2/-2

a=1

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