$\"\"$

\

\

The equations are

\

$\"\"$ (equation 1)

\

$\"\"$ (equation 2) $\"\"$

\

Since $\"\"$ , substitute $\"\"$ for y in the second equation.

\

$\"\"$ (equation 2)

\

$\"\"$ (replace $\"\"$ )

\

$\"\"$ (Subtract: $\"\"$ )

\

$\"\"$ (Add 4y to each side)

\

$\"\"$ (Additive inverse property: $\"\"$ )

\

$\"\"$ (Additive identity property: $\"\"$ )

\

$\"\"$ (Add: $\"\"$ ) $\"\"$

\

$\"\"$ (Divide each side by 5)

\

$\"\"$ (Cancel common terms)

\

$\"\"$ (Divide: $\"\"$ ) $\"\"$

\

Now Substitute 3 for y in either equation to find the value of x.

\

$\"\"$ (equation 1)

\

$\"\"$ (replace y by 3 )

\

$\"\"$ (Multiply: $\"\"$ )

\

$\"\"$ (Subtract: $\"\"$ )

\

The solution is $\"\"$ $\"\"$

\

The solution is $\"\"$ .