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Rezolvati, in multimea numerelor naturale,inecuatiile:
a) 2x+3≤x+17
b)3x-12>2x+13
c)5(x+1)+2 d)2x+3+3x+4>4x+8
e)7(2x-1)≤49
f)6(2x+3)-4≤38