3x-8 ≤ 5
3x ≤ 8+5
3x ≤ 13
x ≤ 13/3
x ≤ 4_1/3
////////////////////
-----------------*--------> x
4_1/3
x∈(-∞; 4_1/3) U x∈N
Ответ: x∈{1; 2; 3; 4} Медина не права
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3x-8 ≤ 5
3x ≤ 8+5
3x ≤ 13
x ≤ 13/3
x ≤ 4_1/3
////////////////////
-----------------*--------> x
4_1/3
x∈(-∞; 4_1/3) U x∈N
Ответ: x∈{1; 2; 3; 4} Медина не права