Division of the same base power. X power of 3 = 1 / 81 [find the value of x] - 0.00000215 = - 2.15 * 10 [find the value of x]

Division of the same base power. X power of 3 = 1 / 81 [find the value of x] - 0.00000215 = - 2.15 * 10 [find the value of x]

3x=1\81
3x = 1 (the fourth power of 3)
The - 4th power of 3x = 3
So x = - 4