Răspunsuri

2014-11-02T17:52:49+02:00


3x+15-6x+12=4x+8-5x+20

-3x+27=-x+28

-2x=1

x=-0.5


2014-11-02T17:53:50+02:00
3x+15-6x+12=4x+8-5x+20
3x-6x-4x+5x=8+20-15-12
-2x=1
x=-1/2