12x=3-(-9)

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Solution for 12x=3-(-9) equation: 



12x=3-(-9)

We move all terms to the left:

12x-(3-(-9))=0

We add all the numbers together, and all the variables

12x-12=0

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

12x=12

x=12/12

x=1

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