Question 913739
You can't solve one equation with two variables. 
You can only get one variable in terms of the other.
To solve for two variables, you need two independent equations.
{{{10x+3y+2=9y+8}}}
{{{7y+8=10x+2}}}
{{{7y=10x-6}}}
{{{y=(10/7)x-(6/7)}}}