Question 1071819
{{{y+1=7/(9x)}}}
{{{x+1=5/(18y)}}}
So,
{{{(x+1)(y+1)=(7/(9x))(5/(18y))}}}
{{{(x+1)(y+1)=(35/162)(1/(xy))}}}
{{{(x+1)(y+1)=(35/162)(9)}}}
{{{(x+1)(y+1)=35/18)}}}