Answer :
8^5x = 16³x + 4
32768x = 4906x + 4
-4906x -4096x
33172x = 4
33172 33172
x = 000.1205836247
32768x = 4906x + 4
-4906x -4096x
33172x = 4
33172 33172
x = 000.1205836247