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3x+3(-5x+3)=-87
We simplify the equation to the form, which is simple to understand
3x+3(-5x+3)=-87
Reorder the terms in parentheses
3x+(-15x+9)=-87
Remove unnecessary parentheses
+3x-15x+9=-87
We move all terms containing x to the left and all other terms to the right.
+3x-15x=-87-9
We simplify left and right side of the equation.
-12x=-96
We divide both sides of the equation by -12 to get x.
x=8
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