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dla x<-1
|x|=-x dla x<0
1.
dla x<-1
-2x-2+3x=-x+2
x+x=2+2
2x=4
x=2∉D
2.
Dla x∈<-1,0)
2x+2+3x=-x+2
5x+x=2-2
6x=0
x=0∉D
3. Dla x≥0
2x+2+3x=x+2
5x-x=2-2
4x=0
x=0
Odp. x=0.
x=0
Do ew. usuniecia przez moderatorow