How to solve the equation, the xth power of 3 equals one twenty-seventh

How to solve the equation, the xth power of 3 equals one twenty-seventh

1/27
=1/3³
=3-³
So x=-3

The position of the rational number abc on the number axis is shown in the figure, then the result of the simplification of the formula sub|a b a+b b-c| is? —(-1)—A—0—1—b—c—> A.2a+3b-c B.3b-c√ C.b+c D.c-b Process? —(-1)—A—0—1—b—c 』—> The position of the rational number abc on the number axis is shown in the figure, then the result of simplifying the formula sub|a b a+b b-c| is? —(-1)—A—0—1—b—c—> A.2a+3b-c B.3b-c√ C.b+c D.c-b Process? —(-1)—A—0—1—b—c 』—>

|A|=-a
|B|=b
|A+b|=a+b
|B-c|=c-b
|A b a+b b-c|
=-A+b+a+b+c-b
=B+c
Option C