<span>x-1/2=4+2х/3
х-2х\3=4+1\2
3\3х-2\3х=4 1\2
1\3х=9\2
х=9\2:1\3
х=9\2*3\1
х=27\2
х=13 1\2</span>
-
+3ху+2х-6у = 4-2+4-2 = 4.
(3-2x)^160 = 160*(-2)*(3-2x)^159
<span>х+1*4+х+16*3=х+4+х+48=</span><em> 0,35</em>
<em>2х=0,35-4-48</em>
<em>2х=-51,65</em>
<em>х=-25,825</em>
{2x+y=12/*2⇒4x+2y=24
{7x-2y=31
прибавим
11x=55
x=55:11
x=5
10+y=12
y=12-10
y=2
Ответ (5;2)