0; 5x-16>0;\\\\x>-4; x>\frac{16}{5};\\\\x>3.2;\\\\x+4=5x-16;\\\\x-5x=-16-4;\\\\-4x=-20;\\\\4x=20;\\\\x=20:4;\\\\x=5" alt="log_8 (x+4)=log8 (5x-16);\\\\x+4>0; 5x-16>0;\\\\x>-4; x>\frac{16}{5};\\\\x>3.2;\\\\x+4=5x-16;\\\\x-5x=-16-4;\\\\-4x=-20;\\\\4x=20;\\\\x=20:4;\\\\x=5" align="absmiddle" class="latex-formula">
ответ: 5