x+45+x-9=180

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



x+45+x-9=180

We move all terms to the left:

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

We add all the numbers together, and all the variables

2x-144=0

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

2x=144

x=144/2

x=72

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