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**The equation |2x+a|=|b-x| has exactly 2 solutions, at x=-4 and x=2/3. Find the value(s) of a and b.**

Ok so the questions is asking me to find possible values of a and b which make the equation true for ONLY x=-4 and x=2/3.

So for:

|a-8|=|b+4|

|a+4/3|=b-2/3|

I need to find the values of a and b that satisfy both equations.

Its from there I am a little stuck. Any help would be greatly appreciated.

Thanks in advance,

Dan.