Question 995769
.
{{{system(log(x) + log(y) = 4,
log(x) + 2*log(y) = 3)}}}.


Distract the first equation from the second.  You will get


{{{log(y)}}} = {{{3 - 4}}} = {{{-1}}}.


Hence,  y = {{{1/10}}}     (if 10 is the base of logarithms).


From this point,  complete the solution yourself.