Question

Rezolvati in Z inecuatiile:
a)x+4<= -3
b)-2x+1>=-3x+4-5x
c)-5x=6<-4
d)3x+5<=4x+2
e)3(x+4)-5>2(x+1)

<=(mai mic sau egal)
>=(mai mare sau egal)

Answer 1

a) x<=-7 => x€(-infinit, -7]
b) 6x>=3
x>=1/2 => x€[1/2, infinit)
c) -5x<=-10| (-1)
x>=2 => x€[2, infinit)
Sau (in functie de cum e scrie exercitiul, "<" nu e pus cum trebuie) -5x>=-10 |(-1)
5x<=10 => x<=2 => x€(-infinit, 2]
d) -x<=-3 |(-1)
x>=3 => x€[3, infinit)
e) 3x+7>2x+1
x>-6 => x€(6, infinit)