6-2x/4>=0; 6-2x>=0; -2x>= -6; x<=3. Ответ: x<=3.
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6-2x/4>=0; 6-2x>=0; -2x>= -6; x<=3. Ответ: x<=3.
6-2x≥0
-2x≥-6
x≤3