Write the expression 11log(z)+15log(y)\displaystyle {11}{\log{{\left({z}\right)}}}+{15}{\log{{\left({y}\right)}}} as a single logarithm.

11log(z)+15log(y)=\displaystyle {11}{\log{{\left({z}\right)}}}+{15}{\log{{\left({y}\right)}}}=