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Rezolvati in multimea numerelor intregi ecuatia: |2x-5|=7

Răspuns :

|2x-5|=7

2x-5=7

-(2x-5)=7

2x=7+5=12

x=12:2=6

-2x+5=7

-2x=7-5=2

x=-1

S={1,-6}
2x-5=7
2x-5=-7
x=6
x=-1
x1=-1,x2=6
Sper ca te-am ajutat!!!