The equations of linear system are .
Since the coefficient of the y - term in two equations is same. So, eliminate these terms by subtracting the equations.
\Write the equations in column form and subtract to eliminate variable y.
\.
The resultant equation is and solve it for x.
Divide each side by negative 7.
\Cancel common terms.
\.
Substitute the value of in equation 1:
and solve for y.
Subtract 16 from each side.
\Divide each side by 9.
\Cancel common terms.
\.
The solution is .
The option C is correct answer.