4x+12=-(x+3)

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Solution for 4x+12=-(x+3) equation:


4x+12=-(x+3)

We simplify the equation to the form, which is simple to understand 
4x+12=-(x+3)

Remove unnecessary parentheses
4x+12=-1x-3

We move all terms containing x to the left and all other terms to the right. 
+4x+1x=-3-12

We simplify left and right side of the equation. 
+5x=-15

We divide both sides of the equation by 5 to get x. 
x=-3

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