$\"\"$

The expression is $\"\"$ .

Subtraction property of equality:

If x + a = b, then x + a - a = b - a, or x = b - a.

$\"\"$ (Subtract 6 from each side)

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

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

$\"\"$

Check:

Check the solution by substituting $\"\"$ in the original equation.

$\"\"$

$\"\"$ (Add: 5 + 6 = 11)

$\"\"$

The value of $\"\"$ .