$\"\"$ $\"\"$

\

The expression is $\"\"$

\

Apply addition proparty of equality: If a = b then $\"\"$

\

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

\

$\"\"$ (Apply Commutative property: $\"\"$ )

\

$\"\"$ (Apply Additive inverse proparty: $\"\"$ )

\

$\"\"$ (Apply Additive identity proparty: $\"\"$ )

\

$\"\"$ (Divide each side by 2)

\

$\"\"$ (Cancel common terms)

\

$\"\"$ (divide: $\"\"$ )

\

$\"\"$

\

Check:

\

Substitute 2 for y in original equation.

\

$\"\"$

\

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

\

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

\

Compare the values the equation is true. $\"\"$

\

The value of $\"\"$ .

\