|x-4|-4 mniejsze lub rowne 0
|x-4|-4 ≤ 0
x-4-4 ≤ 0
x-8 ≤ 0
x ≤ 8
|x-4|-4 ≤0
|x-4|≤4
x-4≤4
x≤8
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|x-4|-4 ≤ 0
x-4-4 ≤ 0
x-8 ≤ 0
x ≤ 8
|x-4|-4 ≤0
|x-4|≤4
x-4≤4
x≤8