Question

tìm x

[ ( 8x - 12 ) : 4 ] . 3³ = 3⁶

Answer 1

[ ( 8x - 12 ) : 4 ] . 3^3 = 3^6

[ ( 8x - 12 ) : 4 ] = 3^3 = 27

     8x - 12          = 27 .4 = 108

      8x = 108 + 12 = 120

        x = 120 : 8 = 15

Answer 2

[ ( 8x - 12 ) : 4 ] = 3⁶ : 3³ = 27

( 8x - 12 ) = 27 . 4 = 108

8x = 108 + 12 = 120

x   = 120 : 8 = 15

Answer 3

NGHIÊM ! CHÀO CỜ , CHÀO !