Answer:
Value of z is 3/8.
Explanation:
Given:

We need to solve the given expression.
Consider,


Now, using law of exponent



Now using Result of Exponent on LHS


Now using another law of exponent on RHS,




By comparing Exponent of both sides, we get
2 - 6z = 10z - 4
2 + 4 = 10z + 6z
16z = 6
z = 6/16
z = 3/8
Therefore, Value of z is 3/8.