9+3x=-(x+7)

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Solution for 9+3x=-(x+7) equation:


9+3x=-(x+7)

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

Remove unnecessary parentheses
9+3x=-1x-7

We move all terms containing x to the left and all other terms to the right. 
+3x+1x=-7-9

We simplify left and right side of the equation. 
+4x=-16

We divide both sides of the equation by 4 to get x. 
x=-4

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