( 1/2x + 8/3 )^7x < 2^7x

[tex]( \frac{1}{2} x + \frac{8}{3} ) {}^{7} x = 2 {}^{7} x \\ \frac{1}{2} x + \frac{8}{3} = 2 \\ \frac{1}{2} x = 2 - \frac{8}{3} \\ \frac{1}{2} x = \frac{6}{3} - \frac{8}{3} \\ \frac{1}{2} x = - \frac{2}{3} \\ x = - \frac{2}{3} \times \frac{2}{1} \\ x = - \frac{4}{3} \\ \\ x = - \frac{4}{3} \\ dan \\ x = 0[/tex]