lnX + ln2 = 3

Answer 1

Use the law of exponent:
lnA+lnB=ln(A*B)

So
lnX+ln2=3
ln(2X)=3
raise to power of e:
e^(ln(2X) = e^3
2X=e^3 [because e^lnY=Y ]
X=(e^3)/2