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2x < 1 /:2
x <1/2
np. 1/3 . 1/4. 1/8
b)
5x < -10 /:5
x < -2
np. -3, -4, -5
c)
-x ≤ 7 /*(-1)
x≥7
np. 7, 8, 10
d)
-3x > 9 /:(-3)
x < 3
np. -1, 0, 2
e)
-1/2x < 4 /:(-1/2)
x> -8
np. -7. -1, 2
2 x -6 < 1 tutaj te x sa jako razy
2 x -1 < 1
b) 5 x -10 < - 10
5 x - 3 < - 10
5 x - 100 < -10
d) -3 x 9 > 9
-3 x -2 > 9
-3 x -1 >9
e) - 1/2 x 4 > 4
- 1/2 x 5 >4
- 1/2x 8 >4
c) -(-7) taki znaczek jak tam jest 7
2×(-2)<1 ; 2×(-¹/₂)<1 ; 2×(-1)<1
5x<-10
5×(-5)<-10 ; 5×(-10)<-10 ; 5×(-7)< -10
-x≤ 7
-7≤ 7; -2≤ 7 ; -(-7)≤ 7
-3x >9
-3×(-4) >9 ; -3×(-7) >9 ; -3×(-²⁷/₃) >9
-¹/₂x<4
-¹/₂×1< 4 ; -¹/₂× (-2) < 4 ; -¹/₂×(-4)< 4