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4x+12=6x-30
We simplify the equation to the form, which is simple to understand
4x+12=6x-30
We move all terms containing x to the left and all other terms to the right.
+4x-6x=-30-12
We simplify left and right side of the equation.
-2x=-42
We divide both sides of the equation by -2 to get x.
x=21
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