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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

2x+4(x-9)-138=0

We multiply parentheses

2x+4x-36-138=0

We add all the numbers together, and all the variables

6x-174=0

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

6x=174

x=174/6

x=29

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