3x-12+x+20=180

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Solution for 3x-12+x+20=180 equation: 



3x-12+x+20=180

We move all terms to the left:

3x-12+x+20-(180)=0

We add all the numbers together, and all the variables

4x-172=0

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

4x=172

x=172/4

x=43

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