log(4k - 5) = log(2k - 1)
log(4k) - log(5) = log(2k) - log(1)
0.6020599913k - 0.6989700043 = 0.3010299957k - 0
0.6020599913k - 0.6989700043 = 0.3010299957k
-0.6020599913k -0.6020599913k
-0.6989700043 = -0.3010299957k
-0.3010299957 -0.3010299957
2.321928094 = k