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Rezolva in N ecuatia:
5x-25<0 va roog


Răspuns :

5x-25<0
5x<25
x<25/5
x<5
x={0,1,2,3,4}
5x<25-0=25
5X<25
x<25:5=5  la ecuati de genu acesta faci mersul invers
x<5
x{0,1,2,3,4,}