$\bigg \{ x \in R: \large\frac{14 x}{x+1}-\frac{9x-30}{x-4} $$<0 \bigg\}=$

Question

\[\begin {array} {1 1} (1)\;(-1,4) & \quad (2)\;(1,4) \cup (5,7) \\ (3)\;(1,7) & \quad (4)\;(-1,1) \cup (4,6) \end {array}\]