0\Rightarrow x<\frac43\\x<1\frac13\\4-3x\leq2^{-3}\\4-3x\leq\frac18\\3x\geq4-\frac18\\3x\geq3\frac78\\3x\geq\frac{31}8\\x\geq\frac{31}{24}\\x\geq1\frac{7}{24}\\OTBET:\;x\in\left[1\frac7{24};\;1\frac13\right)" alt="\log_2(4-3x)\leq-3\\O.D.3.:\;4-3x>0\Rightarrow x<\frac43\\x<1\frac13\\4-3x\leq2^{-3}\\4-3x\leq\frac18\\3x\geq4-\frac18\\3x\geq3\frac78\\3x\geq\frac{31}8\\x\geq\frac{31}{24}\\x\geq1\frac{7}{24}\\OTBET:\;x\in\left[1\frac7{24};\;1\frac13\right)" align="absmiddle" class="latex-formula">