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If \(a, b\) and \(x\) are integers such that \(a^6=b^3=\dfrac{|x|}{x},\) what is the value of \(a - b?\)
(1) \(a^3b^7>0\)
(2) \(a+b>0\)
Answer: D
Source: e-GMAT
(1) \(a^3b^7>0\)
(2) \(a+b>0\)
Answer: D
Source: e-GMAT
