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3x+9+3x+9=7x-5
We simplify the equation to the form, which is simple to understand
3x+9+3x+9=7x-5
We move all terms containing x to the left and all other terms to the right.
+3x+3x-7x=-5-9-9
We simplify left and right side of the equation.
-1x=-23
We divide both sides of the equation by -1 to get x.
x=23
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