12x3=36

25x6=150

15x5=75

48:3=16

ban giup minh bai toan o duoi ban voi

9999999 - 9999999 =0

nha bn k mk nha bn

thanks nhju

5 ^{2x - 3}  - 2 . 5 ² = 5 ² . 3

5 ^{2x - 3}  - 50       = 75

5 ^{2x - 3}                    = 125

5 ^{2x - 3}                    = 5 ³

=> 2x - 3 = 3

     2x      = 6

       x       = 3