Question 855135
A rule about logarithms says, {{{log(b,x)+log(b,y)=log(b,xy)}}}.


Two equivalent ways of writing an equation are these, in regard to an exponential function:
{{{b^x=y}}}  means the same as {{{log(b,y)=x}}}.


Those two facts mean that you can combine the left hand member into a single logarithm, and then you can rewrite the equation in its exponential form, from which you will be able to easily solve for x.