<span>{4(х-2)-3(у+3)=1
{3(х+2)-2(х-у)=5</span>
{4x - 8 - 3y - 9 = 1
{3x + 6 - 2x + 2y = 5
{4x - 3y = 18
{x + 2y = -1
{4x - 3y = 18
{x = -1 - 2y
{-4 - 8y - 3y = 18
{x = -1 - 2y
{-11y = 22
{x = -1 - 2y
{y = -2
{x = -1 -2y
{y = -2
{x = 3
<span>у=-14x+32 и y=26x-8</span>
-14x+32=26x-8
-40x=-40
x=1
у=-14*1+32=18
точка (1;18)
Решение во вложении. Удачи.
Ответы отметил.
3х-0.4=х-2/3
3х-х=-2/3+0.4
2х=-2/3+2/5
2х=-4/15
х=-2/15
A)
![\left \{ {{3x\ \textless \ 9} \atop {4x\ \textless \ 8}} \right.](https://tex.z-dn.net/?f=+%5Cleft+%5C%7B+%7B%7B3x%5C+%5Ctextless+%5C+9%7D+%5Catop+%7B4x%5C+%5Ctextless+%5C+8%7D%7D+%5Cright.+)
![\left \{ {{x\ \textless \ 3} \atop {x\ \textless \ 2}} \right.](https://tex.z-dn.net/?f=+%5Cleft+%5C%7B+%7B%7Bx%5C+%5Ctextless+%5C+3%7D+%5Catop+%7Bx%5C+%5Ctextless+%5C+2%7D%7D+%5Cright.+)
Общее решение x<2
б) домножим первое уравнение на 3 и сложим со вторым, получаем
15x-3y=3
16x=8 ⇒x=0,5; y=5*0,5-1=1,5