(x+3)+2x=0

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Solution for (x+3)+2x=0 equation: 



(x+3)+2x=0

We add all the numbers together, and all the variables

2x+(x+3)=0

We get rid of parentheses

2x+x+3=0

We add all the numbers together, and all the variables

3x+3=0

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

3x=-3

x=-3/3

x=-1

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