9x-12x=36+72

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Solution for 9x-12x=36+72 equation: 



9x-12x=36+72

We move all terms to the left:

9x-12x-(36+72)=0

We add all the numbers together, and all the variables

9x-12x-108=0

We add all the numbers together, and all the variables

-3x-108=0

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

-3x=108

x=108/-3

x=-36

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