Question

Find the value of k when 5^-3 + 5^-4 = 5^k x 5^-4

Answer 1

Given , 1/2 is a solution of the equation

or, 1/4 - 5/4 = -k/2

or, -k/2 = -1

or k = 2

Explanation:

Answer 2

k= 6/5 or 1.12

Explanation:

You isolate the variable by dividing each side by factors that don't contain the variable. This variable (K) is not a whole number so I gave you the fraction and rounded decimal form. Hope this helps :)