Question

Rezolvati in N urmatoarele ecuatii :
a) -3x - 17 < 0
b) l-7l * x +14 ≥ 0
c) -8x +11 >0

Answer 1

a)-3x-17<0
-3x<17
3x>-17
 x>-5 intregi 2/3
 Cum x∈N⇒S:x∈N

b)|-7|*x+14≥0
  7x≥-14
   x≥-2
  Cum x∈N⇒S:x∈N

c)-8x+11>0
   -8x>-11
    8x<11
     x< 1 intreg 3/8
  Cum x∈N⇒S:x∈{1,0}

Answer 2

-3x-17∠0
-3x∠17
x>-17/3
x∈0,1,2,3,,,,∞


I-7Ix+14≥0
7x≥-14
x≥-14/7
x≥-2
x∈0,1,2,3,4,5,6,,,,∞


-8x+11>0
-8x>-11
x>11/8
x∈2,3,4,5,6,,,,∞