jika 9^m = 4, maka 4.3^m+1 - 27 = ... tolong ya, sekalian cara nya

9^m = 4
3^2m = 2^2
3^m = 2

4 . 3^(m + 1) - 27
= 4 . 3^m . 3^1 - 27
= 4 . 2 . 3 - 27
= -3

Jawaban sy lampirkan ya :)