Question

Calculate lnx-ln(x-3)=ln4

Answer 1

I managed to get x=-10, is this right?

Answer 2

how

Answer 3

Using rules of logs I divided lnx-ln(x-3) which gave ln(x/x-3)=ln4
I then cancelled out the lns and factorised the x giving \[x\frac{ 1 }{ 1-3 }=4\]
Then divided 4 by -0.4, I have a feeling this is wrong though