Log2(1-3x)<=4;
1-3x<=2^4;
1-3x>0
1-3x<=16
3x<1
3x>= - 16+1
x<1/3
3x>= - 15
x>= - 5
Ответ : -5 <= x < 1/3
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Log2(1-3x)<=4;
1-3x<=2^4;
1-3x>0
1-3x<=16
3x<1
3x>= - 16+1
x<1/3
3x>= - 15
x<1/3
x>= - 5
x<1/3
Ответ : -5 <= x < 1/3