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

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



2x+2(x-1)=18

We move all terms to the left:

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

We multiply parentheses

2x+2x-2-18=0

We add all the numbers together, and all the variables

4x-20=0

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

4x=20

x=20/4

x=5

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