x=2(180-x)+9

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Solution for x=2(180-x)+9 equation: 



x=2(180-x)+9

We move all terms to the left:

x-(2(180-x)+9)=0

We add all the numbers together, and all the variables

x-(2(-1x+180)+9)=0



We calculate terms in parentheses: -(2(-1x+180)+9), so:

2(-1x+180)+9

We multiply parentheses

-2x+360+9

We add all the numbers together, and all the variables

-2x+369

Back to the equation:

-(-2x+369)



We get rid of parentheses

x+2x-369=0

We add all the numbers together, and all the variables

3x-369=0

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

3x=369

x=369/3

x=123

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