tolong jawab bsok dikumpul

3^(x-4) = 1
⇔ 3^(x-4) = 3^(0)
⇔ x - 4 = 0
⇔ x = 4


6^(2x - 1) = 216
⇔ 6^(2x - 1) = 6^(3)
⇔ 2x - 1 = 3
⇔ 2x = 4
⇔ x = 4/2
⇔ x = 2