5+-2(x+1)=21

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Solution for 5+-2(x+1)=21 equation: 



5+-2(x+1)=21

We move all terms to the left:

5+-2(x+1)-(21)=0

determiningTheFunctionDomain
-2(x+1)+5-21+=0

We add all the numbers together, and all the variables

-2(x+1)=0

We multiply parentheses

-2x-2=0

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

-2x=2

x=2/-2

x=-1

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