7x+7x+x=180

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Solution for 7x+7x+x=180 equation: 



7x+7x+x=180

We move all terms to the left:

7x+7x+x-(180)=0

We add all the numbers together, and all the variables

15x-180=0

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

15x=180

x=180/15

x=12

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