Question

Rezolvati in N: A)8x+5>5x+2 ; b)5(X+1)-4x>3; c)2(2x+4)-3x>12

Answer 1

a)8x+5>5x+2 8x-5x>2-53x>-3
x>-1
x=N* adica apartine de la 0 la infinit

 b)5(X+1)-4x>35x+5-4x>3x+5>3
x>3-5
x>-2
x=N*

c)2(2x+4)-3x>124x+8-3x>12
x+8>12
x>12-8
x>4
x∈{4,5,6,7...infinit}