$\"\"$

\

The system of equations are $\"\"$ .

\

Observe the coefficient of each term, the coefficient of y - term is one in second equation, so the best method is substitution method to solve the system of equations.

\

Substitution method:

\

Equation 1: $\"\"$

\

Equation 2: $\"\"$ .

\

Solve the second equation, $\"\"$ for y since the coefficient is 1.

\

Subtract 2x from each side

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

The value of $\"\"$ substitute in the first equation, $\"\"$ to find x.

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Add 4 to each side

\

$\"\"$

\

$\"\"$

\

Divide each side by negative 5.

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

The value of $\"\"$ substitute in the either equation to find y.

\

Equation 1: $\"\"$

\

$\"\"$

\

$\"\"$

\

Add 6 to each side

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

The solution is $\"\"$ .