2(x-1)+x-1=9

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Solution for 2(x-1)+x-1=9 equation: 



2(x-1)+x-1=9

We move all terms to the left:

2(x-1)+x-1-(9)=0

We add all the numbers together, and all the variables

x+2(x-1)-10=0

We multiply parentheses

x+2x-2-10=0

We add all the numbers together, and all the variables

3x-12=0

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

3x=12

x=12/3

x=4

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