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Rezolvati in Z incecuatiile: a) 2x - 3≤ 11; b)-2x+1≥7; c) 3x-1 > 5; d) -5x +10 < 0 ; e) 4x+3> 1 ; f)-2x+5< 12

Răspuns :

2x-3<11

2x<11+3
2x14
x<14:2
x<7
-2+1>7
-2>6
>-3
x aparine ( -3 -2 -1)
3x-1>5
3x>6
x> 2
x apartine (2,1 0)
-5x+10<0
-5x < +10
-5x < 2
x<2.5 
x apartine (2.5 ,1 ,0 )
4x +3>1
4x>2
x>2
x aparine  ( 2,1 )
-2x+5<12
-2<7
x<3.5
x apartine lui ( 3.5 .3 2 1 )