-2(1+x)=-20

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Solution for -2(1+x)=-20 equation: 



-2(1+x)=-20

We move all terms to the left:

-2(1+x)-(-20)=0

We add all the numbers together, and all the variables

-2(x+1)-(-20)=0

We add all the numbers together, and all the variables

-2(x+1)+20=0

We multiply parentheses

-2x-2+20=0

We add all the numbers together, and all the variables

-2x+18=0

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

-2x=-18

x=-18/-2

x=+9

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