Kak rewit'?????1010,1011,1012 i 1013 pomogute pozhaluista?!

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$3x \geq -18$
$x \geq -18:3$
$x \geq -6$
х є $-6;+\infty)$
===============
$-8x \leq 32$
$x \geq 32:(-8)$
$x \geq -4$
x є $[-4;+\infty)$
===================
$5y \geq 16$
$y \geq 16:5$
$y \geq 3.2$
y є $[5.2;+\infty)$
====================

13" alt="6.5y>13" align="absmiddle" class="latex-formula">

13:6.5" alt="y>13:6.5" align="absmiddle" class="latex-formula">

2" alt="y>2" align="absmiddle" class="latex-formula">
y є $(2;+\infty)$
======================
$-8x \geq 24$
$x \leq 24:(-8)$
$x \leq -3$
x є $(-\infty;-3]$
=================
$7.5x \leq 30$
$x \leq 30:7.5$
$x \leq 4$
x є $(-\infty;4]$
====================
$x-3 \leq 11$
$x \leq 11+3$
$x \leq 14$
x є $(-\infty;14]$
===========
$-3<y-4$

-3" alt="y-4>-3" align="absmiddle" class="latex-formula">

-3+4" alt="y>-3+4" align="absmiddle" class="latex-formula">

1" alt="y>1" align="absmiddle" class="latex-formula">
y є $(1;+\infty)$
==================

-3" alt="x+5>-3" align="absmiddle" class="latex-formula">

-3-5" alt="x>-3-5" align="absmiddle" class="latex-formula">

-8" alt="x>-8" align="absmiddle" class="latex-formula">
x є $(-8;+\infty)$
================
$2y \leq y+8$
$2y-y \leq 8$
$y \leq 8$
y є $(-\infty;8]$
====================
$11 \geq x+2$
$x+2 \leq 11$
$x \leq 11-2$
$x \leq 9$
x є $(-\infty;9]$
==================

5y+4" alt="3y>5y+4" align="absmiddle" class="latex-formula">

4" alt="3y-5y>4" align="absmiddle" class="latex-formula">

4" alt="-2y>4" align="absmiddle" class="latex-formula">
$y<4:(-2)$
$y<-2$
y є $(-\infty;-2)$
=====================
$x-3 \geq -13$
$x \geq -13+3$
$x \geq -10$
x є $[-10;+\infty)$
============
$x+1 \leq 9$
$x \leq 9-1$
$x \leq 8$
x є $(-\infty;8]$
=============

5" alt="x+3>5" align="absmiddle" class="latex-formula">

5-3" alt="x>5-3" align="absmiddle" class="latex-formula">

2" alt="x>2" align="absmiddle" class="latex-formula">
x є $(2;+\infty)$
=============
$2x+7<11$
$2x<11-7$
$2x<4$
$x<4:2$
$x<2$
x є $(-\infty;2)$
==================
$4x+6 \leq 21$
$4x \leq 21-6$
$4x \leq 15$
$x \leq 15:4$
$x \leq 3.75$
x є $(-\infty;3.75]$
===============
$3x-7<x+1$
$3x-x<1+7$
$2x<8$
<img src="https://tex.z-dn.net/?f=x%3C8%3A2" id="TexFormula80"

dtnth_zn (408k баллов) 17 Март, 18