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13x=4(3x-3)
We simplify the equation to the form, which is simple to understand
13x=4(3x-3)
Reorder the terms in parentheses
13x=+(+12x-12)
Remove unnecessary parentheses
+13x=+12x-12
We move all terms containing x to the left and all other terms to the right.
+13x-12x=-12
We simplify left and right side of the equation.
+1x=-12
We divide both sides of the equation by 1 to get x.
x=-12
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