7х≥-14. 2)3х-8

tnkiriluk2108 @tnkiriluk2108

October 2021 1 5 Report

Розв'яжіть нерівність:
1) 2/7х≥-14. 2)3х-8<4(2х-3)

Answers & Comments

Luluput

Verified answer

1)
$\frac{2}{7} x \geq -14$
$x \geq -14: \frac{2}{7}$
$x \geq -14*\frac{7}{2}$
$x \geq -49$
------------[-49]------------
////////////////
$x$ ∈ $[-49;+$ ∞ $)$
2)
$3x-8\ \textless \ 4(2x-3)$
$3x-8\ \textless \ 8x-12$
$3x-8x\ \textless \ 8-12$
$-5x\ \textless \ -4$
$x\ \textgreater \ 0.8$
--------------(0.8)---------------
///////////////////
$x$ ∈ $(0.8;+$ ∞ $)$

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