+26388 constant
(-5x - 8a) - (8a - 2x)
\(\begin{array}{|rcll|} \hline && (-5x - 8a) - (8a - 2x) \\ &=& -5x - 8a - (8a - 2x) \\ &=& -5x - 8a + (-1)\cdot (8a - 2x) \\ &=& -5x - 8a + (-1)\cdot 8a + (-1)\cdot (-2x) \\ &=& -5x - 8a -8a + 2x \\ &=& -5x + 2x - 8a -8a \\ &=& -3x - 16a \\ \hline \end{array}\)
