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Rezolvati in multimea numerelor naturale inecuatiile:
a)x+4[tex] \geq [/tex]7
b)11-x >5
c)18:x[tex] \leq [/tex]2
d)x:3 < 4


Răspuns :

a)
x+47
x3

b)11-x>5
-x>-6
x>6

c)18:x2
x18 x 2
x36

d) x:3 < 4
x< 4 x 3
x< 12