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39x+9=12x+9
We simplify the equation to the form, which is simple to understand
39x+9=12x+9
We move all terms containing x to the left and all other terms to the right.
+39x-12x=+9-9
We simplify left and right side of the equation.
+27x=0
We divide both sides of the equation by 27 to get x.
x=0
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