(x+1)-2(x-1)+6=18

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Solution for (x+1)-2(x-1)+6=18 equation: 



(x+1)-2(x-1)+6=18

We move all terms to the left:

(x+1)-2(x-1)+6-(18)=0

We add all the numbers together, and all the variables

(x+1)-2(x-1)-12=0

We multiply parentheses

(x+1)-2x+2-12=0

We get rid of parentheses

x-2x+1+2-12=0

We add all the numbers together, and all the variables

-1x-9=0

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

-x=9

x=9/-1

x=-9

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