Răspuns :
e)3x-6+6-x·(-2)=
3x+2x=5x
5x=-18⇒x=-18 supra5
f)x²-2x+1-(x²-x+2x-2)+1=0
x²-2x+1-x²-x+2+1=0
-3x+4=0
-3x=-4⇒x=4supra 3
3x+2x=5x
5x=-18⇒x=-18 supra5
f)x²-2x+1-(x²-x+2x-2)+1=0
x²-2x+1-x²-x+2+1=0
-3x+4=0
-3x=-4⇒x=4supra 3