(4x+9)=129

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Solution for (4x+9)=129 equation: 



(4x+9)=129

We move all terms to the left:

(4x+9)-(129)=0

We get rid of parentheses

4x+9-129=0

We add all the numbers together, and all the variables

4x-120=0

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

4x=120

x=120/4

x=30

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