Question 825325
Solve the two equations resulting from x+3>=0 and x+3<0.  


x+3>=0 gives you |x+3|-9=x+3-9=2x,
-x+-6=0
x=-6


x+3<0 gives you |x+3|-9=-x-3-9=2x,
-x-12=2x
3x=-12
x=-4


ANSWER:  x=-6 or x=-4




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That answer is not yet finished, since as stanbon has shown, when you recheck x=-6, the statement is false.

|x+3|-9=2x
|-6+3|-9=2(-6)
|-3|-9=-12
3-9=-12
-6=-12