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12-2x=-3(2x+1)
We simplify the equation to the form, which is simple to understand
12-2x=-3(2x+1)
Reorder the terms in parentheses
12-2x=+(-6x-3)
Remove unnecessary parentheses
+12-2x=-6x-3
We move all terms containing x to the left and all other terms to the right.
-2x+6x=-3-12
We simplify left and right side of the equation.
+4x=-15
We divide both sides of the equation by 4 to get x.
x=-3.75
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