Răspunsuri

2014-07-29T14:39:55+03:00
Aducem la acelasi numitor comun : x-4<2x ≤ 10-2x ;  x> -4  si 4x ≤ 10   x  ≤ 2.5 
 rezulta ca x 
∈ { -3, -2, -1, 0, 1, 2} 
1 2 1
2014-07-29T14:48:25+03:00
(x-4)/2  < x ≤  5-x   aducem la acelasi numitor

x-4 < 2x ≤ 10-2x  |-4

x < 2x-4 ≤ 6-2x

2x-4 ≤ 6-2x

2x +2x ≤ 6+4

4x ≤ 10 |:2

2x ≤ 5

x ≤ 5/2

x ≤ 2,5
x ∈ Z    => x∈ (-α; 2]