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6x-3(4x+9)=-75
We simplify the equation to the form, which is simple to understand
6x-3(4x+9)=-75
Reorder the terms in parentheses
6x+(-12x-27)=-75
Remove unnecessary parentheses
+6x-12x-27=-75
We move all terms containing x to the left and all other terms to the right.
+6x-12x=-75+27
We simplify left and right side of the equation.
-6x=-48
We divide both sides of the equation by -6 to get x.
x=8
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