15+2x+x=180

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Solution for 15+2x+x=180 equation: 



15+2x+x=180

We move all terms to the left:

15+2x+x-(180)=0

We add all the numbers together, and all the variables

3x-165=0

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

3x=165

x=165/3

x=55

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