(3x+9)+129=180

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Solution for (3x+9)+129=180 equation: 



(3x+9)+129=180

We move all terms to the left:

(3x+9)+129-(180)=0

We add all the numbers together, and all the variables

(3x+9)-51=0

We get rid of parentheses

3x+9-51=0

We add all the numbers together, and all the variables

3x-42=0

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

3x=42

x=42/3

x=14

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