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12x+9=17x-8
We simplify the equation to the form, which is simple to understand
12x+9=17x-8
We move all terms containing x to the left and all other terms to the right.
+12x-17x=-8-9
We simplify left and right side of the equation.
-5x=-17
We divide both sides of the equation by -5 to get x.
x=3.4
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