9(x)+3(x)=180

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Solution for 9(x)+3(x)=180 equation: 



9(x)+3(x)=180

We move all terms to the left:

9(x)+3(x)-(180)=0

We add all the numbers together, and all the variables

12x-180=0

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

12x=180

x=180/12

x=15

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