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x-4 < 3 lub x-4 > -3
x < 7 x>1
x ∈ (1,7)
b)|x+1| ≤ 2
x+1 ≤ 2 lub x+1 ≥ -2
x≤1 x≥-3
x ∈ <-3,1>
c)|x-2| > 0
x-2 > 0
x > 2
x∈(2,∞)
d|x+2| ≥ -3
x+2 ≥ -3 lub x+2 ≤ 3
x ≥ -5 x ≤ 1
x∈<-5,1>
e)|3-x| - 1 ≤ 0
3-x-1 ≤ 0
-x ≤ -2 /* (-1)
x ≥ 2
x∈<2,∞)
f)|5+x| - 2 > 0
5+x-2 > 0
x > -3
x∈(-3,∞)
g)0 < 4 - |x-4|
0 < 4 - x + 4
8-x > 0
-x > -8 /* (-1)
x > 8
x∈(8,∞)
h)1 - |9-x| ≥ 1
1-9+x ≥ 1 lub 1-9+x ≤ -1
x ≥ 9 x ≤ 7
x∈(-∞,7> u <9,∞)
i)-3|6+x| < 0
-3 * (6+x) < 3
-18 -3x < 3
-3x < 21 / : (-3)
x > -7
x∈(-7,∞)