- 1.9 \\ ОДЗ: \\ 1.6 - 4x > 0 \\ - 4x > - 1.6 \\ x > - 1.6 \div ( - 4) \\ x < 0.4 " alt=" log_{81}(1.6 - 4x) < 0.5 \\ 1.6 - 4x < \sqrt{81} \\ - 4x < 9 - 1.6 \\ - 4x < 7.6 \\ x < 7.6 \div ( - 4) \\ x > - 1.9 \\ ОДЗ: \\ 1.6 - 4x > 0 \\ - 4x > - 1.6 \\ x > - 1.6 \div ( - 4) \\ x < 0.4 " align="absmiddle" class="latex-formula">
Ответ: (-1,9; 0,4)