What are all values of $$\(x\)$$ which satisfy the system $$\(3 x-4< 8 x+6\)$$, and $$\(5 x+1< 2 x+4\)$$, and $$\(4 x+3< 3 x+5\)$$ ? All values of $$\(x\)$$ can be expressed as $$\(a< x< b\)$$. Please enter the sum of $$\(a\)$$ and $$\(b\)$$.

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