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-9(x-2)-21=-3
We simplify the equation to the form, which is simple to understand
-9(x-2)-21=-3
Reorder the terms in parentheses
+(-9x+18)-21=-3
Remove unnecessary parentheses
-9x+18-21=-3
We move all terms containing x to the left and all other terms to the right.
-9x=-3-18+21
We simplify left and right side of the equation.
-9x=0
We divide both sides of the equation by -9 to get x.
x=-0
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