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3(x+7)=-6
We simplify the equation to the form, which is simple to understand
3(x+7)=-6
Reorder the terms in parentheses
+(+3x+21)=-6
Remove unnecessary parentheses
+3x+21=-6
We move all terms containing x to the left and all other terms to the right.
+3x=-6-21
We simplify left and right side of the equation.
+3x=-27
We divide both sides of the equation by 3 to get x.
x=-9
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