(3+x)+2x=30

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Solution for (3+x)+2x=30 equation: 



(3+x)+2x=30

We move all terms to the left:

(3+x)+2x-(30)=0

We add all the numbers together, and all the variables

(x+3)+2x-30=0

We add all the numbers together, and all the variables

2x+(x+3)-30=0

We get rid of parentheses

2x+x+3-30=0

We add all the numbers together, and all the variables

3x-27=0

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

3x=27

x=27/3

x=9

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