Question

AJUTOR! VA ROG! REPEDE! VA DAU COROANA! Rezolvati in multimea numerelor intregi negative inecuatiile:

Answer 1

a)

-5x-6<-2x <=> -3x<6 <=> x>-2 => x=-1

b)

-x+5≤2x+20 <=> -3x ≤ 15 <=> x≥ -5 => x∈{-5,-4,-3,-2,-1}

c)

4x+3 ≥-2x-15 <=> 6x ≥ -18 <=> x≥ -3 => x∈ {-3,-2,-1}

d)

x-4>2x+1 <=> -x>5 <=> x<-5 => x ∈ {-6,-7,-8,...}

e)

2(x-1)+1<-9 <=> 2x-2+1<-9 <=> 2x<-8 <=> x<-4 => x∈{-5,-6,-7,....}

f)

5(x+2)-1≥-1 <=> 5x+10-1≥-1 <=> 5x≥-10 <=>x≥-2 => x∈{-2,-1}