Solving by the substitution method

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Solve the following system of equations with unknowns $x$ and $y$ by using one equation to express $x$ in $y$ . Subsequently substitute this expression for $x$ in the other equation so that you get a linear equation with unknown $y$ .

$\lineqs{ 7 x+6 y &=& 2 \cr -x-y &=& 3 \cr}$
Enter the answer in the form $x=a\land y=b$ with proper values of $a$ and $b$ . You can enter the system below as a starting point for the reduction to a solution.

$7 x+6 y=2 \land -x-y=3$

Solving linear equations and inequalities: Systems of linear equations in two unknowns

Solving by the substitution method