(6x+3)+(9x-3)=180

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Solution for (6x+3)+(9x-3)=180 equation:



(6x+3)+(9x-3)=180
We move all terms to the left:
(6x+3)+(9x-3)-(180)=0
We get rid of parentheses
6x+9x+3-3-180=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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