2(x+1)+x=4

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Solution for 2(x+1)+x=4 equation: 



2(x+1)+x=4

We move all terms to the left:

2(x+1)+x-(4)=0

We add all the numbers together, and all the variables

x+2(x+1)-4=0

We multiply parentheses

x+2x+2-4=0

We add all the numbers together, and all the variables

3x-2=0

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

3x=2

x=2/3

x=2/3

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