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5x+9=12x-13
We simplify the equation to the form, which is simple to understand
5x+9=12x-13
We move all terms containing x to the left and all other terms to the right.
+5x-12x=-13-9
We simplify left and right side of the equation.
-7x=-22
We divide both sides of the equation by -7 to get x.
x=3.1428571428571
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