116 644x3 116 644x3 116 644x3Solution116 644x3 42 434x3

Solution

1/16 = 64^4x-3
4^-2 = 4^3(4x-3)
Since bases aer equal, we can equate the powers to give,
-2 = 12x-9
12x= 9-2 = 7
x=7/12

Thus, x= 7/12;