15=2^x
Take natural log of both sides.
therefore
ln(15)=ln(2^x)
move x to the front
ln(15)=x*ln(2)
move ln(2) to the other side
therfore x=ln(15)/ln(2)
write all this down on paper to see it properly.
therefore
ln(15)=ln(2^x)
move x to the front
ln(15)=x*ln(2)
move ln(2) to the other side
therfore x=ln(15)/ln(2)
write all this down on paper to see it properly.