27 28 apa ya kak,pake cara..

27
[tex] {16}^{2x + 4} = {0.25}^{2( - 3x - 3)} \\ {4}^{2(2x + 4)} = {4}^{ - 2( - 3x - 3)} \\ 4x + 8 = 6x + 6 \\ 4x - 6x = 6 - 8 \\ - 2x = - 2 \\[/tex]
[tex]x = 2[/tex]
28.
[tex] {2}^{ - 6(x - 1)} = {2}^{3x + 1} \\ - 6x + 6 = 3x + 1 \\ - 6x - 3x = 1 - 6 \\ - 9x = - 5 \\ x = \frac{5}{9} [/tex]