2(x+1)=-21

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



2(x+1)=-21

We move all terms to the left:

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

We add all the numbers together, and all the variables

2(x+1)+21=0

We multiply parentheses

2x+2+21=0

We add all the numbers together, and all the variables

2x+23=0

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

2x=-23

x=-23/2

x=-11+1/2

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