3[2x+7]-9=0

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Solution for 3[2x+7]-9=0 equation:


3[2x+7]-9=0

We simplify the equation to the form, which is simple to understand 
3(2x+7)-9=0

Reorder the terms in parentheses
+(+6x+21)-9=0

Remove unnecessary parentheses
+6x+21-9=0

We move all terms containing x to the left and all other terms to the right. 
+6x=0-21+9

We simplify left and right side of the equation. 
+6x=-12

We divide both sides of the equation by 6 to get x. 
x=-2

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