tex]...

katebelaya200588 @katebelaya200588

July 2022 1 7 Report

Помогите пожалуйста!! Алгебра
[tex] - 2.5 \leqslant \frac{1 - 3x}{2} \leqslant 1.5[/tex]

Answers & Comments

zinaidazina

$-2,5\leq \frac{1-3x}{2} \leq1,5$

$-2,5*2\leq \frac{1-3x}{2}*2 \leq1,5*2$

$-5\leq {1-3x} \leq3$

$-5-1\leq {1-3x}-1 \leq3-1$

$-6\leq {-3x} \leq2$

$-6:(-3)\geq {-3x}:(-3)\geq 2:(-3)$

$2\geq x\geq -\frac{2}{3}$

$-\frac{2}{3}\leq x\leq 2$

$x$ ∈ $[-\frac{2}{3};2]$

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