5x-0,8=2x+1,6
5x-2x=1,6+0,8
3x=2,4
x=2,4/3
x= /посчитаешь на калькуляторе./
4-2(х+3)=4(х-5)
4-2х+6=4х-20
-2х-4х=-20+4-6
-6х=18
х=-(6/18)
х=-(2/9)
1- х/6=2х+6/3
1- х=4х+18
-х-4х=18-1
-5х=17
х=-(5/17)
1-2х/3 - х+3/4 =2-4х/5
1-2х/3 - х+3/4 - 2-4х/5 = 0
4-8х-3х+9 - 2-4х/5 = 0
-11х + 13 - 2-4х/5 = 0
-55х + 65 - 2 - 4х = 0
-59х = 63
х = -(63/59)
х = -(21/27...)
Вот чо-то намудрил здесь.
(х+5)^2-х^2=х-5
х^2+10х+25-х^2=х-5
10х+25=х-5
10х-х=-5-25
9х=-30
х=-30÷9
х=-30/9=-10/3=-3 1/3
5х+хошрмролипоолдрпродждии
2х - 3/6 - 2х + 1/3 + 4 + х/2 = 0
<span>1/3 - 3/6 + 4 + х/2 = 0 </span>
<span>(2-3)/6 + 4 + х/2 = 0 </span>
<span>(-1 + 24)/6 + х/2 = 0 </span>
<span>23/6 + х/2 = 0 </span>
<span>(23+3х) /6 = 0 </span>
<span>23 + 3х = 0 </span>
<span>3х = -23 </span>
<span>х = -23/3 </span>
<span>х = - 7 (целых) 2/3 </span>