(9+2x)=129

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Solution for (9+2x)=129 equation: 



(9+2x)=129

We move all terms to the left:

(9+2x)-(129)=0

We add all the numbers together, and all the variables

(2x+9)-129=0

We get rid of parentheses

2x+9-129=0

We add all the numbers together, and all the variables

2x-120=0

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

2x=120

x=120/2

x=60

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