Question 320315
{{{9/(z+2)+9/(5z)=(9z)/(z(z+2))+9(z+2)/(z(z+2))}}}
{{{9/(z+2)+9/(5z)=(9z+9(z+2))/(z(z+2))}}}
{{{9/(z+2)+9/(5z)=(9z+9z+18)/(z(z+2))}}}
{{{9/(z+2)+9/(5z)=(18(z+1))/(z(z+2))}}}