Alright, start with simplifying both sides [tex] \frac{2}{7} k+ \frac{-3}{8} = \frac{-19}{8} [/tex] Than add [tex] \frac{3}{8} [/tex] to both sides. [tex] \frac{2}{7}k + \frac{-3}{8} + \frac{3}{8} =\frac{-19}{8} + \frac{3}{8}[/tex] which is [tex] \frac{2}{7} k=-2[/tex]
After this, multiply each side by [tex] \frac{7}{2} [/tex] [tex]( \frac{7}{2})* \frac{2}{7} k= ( \frac{7}{2})*(-2)[/tex] So, your final answer is K=-7
