2x-9+x+45=180

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Solution for 2x-9+x+45=180 equation: 



2x-9+x+45=180

We move all terms to the left:

2x-9+x+45-(180)=0

We add all the numbers together, and all the variables

3x-144=0

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

3x=144

x=144/3

x=48

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