(12x+75)+(9x)=180

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Solution for (12x+75)+(9x)=180 equation: 



(12x+75)+(9x)=180

We move all terms to the left:

(12x+75)+(9x)-(180)=0

We add all the numbers together, and all the variables

9x+(12x+75)-180=0

We get rid of parentheses

9x+12x+75-180=0

We add all the numbers together, and all the variables

21x-105=0

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

21x=105

x=105/21

x=5

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