Question

Помогите пожалуйста!!!!!!!!!!

Answer 1

$-2,5\leq \frac{1-3x}{2}\leq 1,5\\\\-2,5*2\leq \frac{1-3x}{2}*2\leq1,5*2\\\\-5\leq 1-3x\leq 3\\\\-5-1\leq1-3x-1\leq3-1\\\\-6\leq-3x\leq2\\\\-6:(-3)\leq -3x:(-3)\leq2:(-3) \\\\-\frac{2}{3}\leq x \leq2 \\\\Otvet:\boxed{x\in[-\frac{2}{3};2]}$