10-x=-6x-5

-4x+1=4x+9

7-2x=-5x-3

-{5x-3}+2=-2{-5x+1}-1

6-{-5+x}=-3{-2x+9}-1

daje naj!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


Odpowiedź :

Odpowiedź:

[tex]10-x=-6x-5\\\\-x+6x=-5-10\\\\5x=-15\ \ /:5\\\\x=-3\\\\-------\\\\-4x+1=4x+9\\\\-4x-4x=9-1\\\\-8x=8\ \ /:(-8)\\\\x=-1\\\\-------\\\\7-2x=-5x-3\\\\-2x+5x=-3-7\\\\3x=-10\ \ /:3\\\\x=-\frac{10}{3}\\\\x=-3\frac{1}{3}\\\\-------[/tex]

[tex]-(5x-3)+2=-2(-5x+1)-1\\\\-5x+3+2=10x-2-1\\\\-5x+5=10x-3\\\\-5x-10x=-3-5\\\\-15x=-8\ \ /:(-15)\\\\x=\frac{8}{15}\\\\-------\\\\6-(-5+x)=-3(-2x+9)-1\\\\6+5-x=6x-27-1\\\\11-x=6x-28\\\\-x-6x=-28-11\\\\-7x=-39\ \ /:(-7)\\\\x=\frac{39}{7}\\\\x=5\frac{4}{7}[/tex]