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Rezolvati in N inecuatiile
A)5x-2<2x+5
B)7-2x>x-8


Răspuns :

A) 5x-2 < 2x+5
5x-2x < 5+2
3x < 7
x < 7/3.

S = {0;1;2}.

B) 7-2x > x-8
-2x-x > -8-7
-3x > -15 /•(-1)
3x < 15
x < 15/3
x < 5.

S = {1;2;3;4}.



Succes!