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

The equation is $\"\"$ .

Apply addition property of equality: Add 67 to each side.

$\"\"$

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

$\"\"$ (Add: 104 + 67 = 171) $\"\"$

Check:

To check the solution, substitute $\"\"$ in original equation.

$\"\"$

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

The equation is true.

$\"\"$

The value of y = 171.