$\"\"$

The equation is $\"\"$ .

Solve the eqation.

$\"\"$ (Original equation)

$\"\"$ (Simplify)

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

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

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

$\"\"$ (Apply additive inverse property: $\"\"$ ) $\"\"$ (Multiply on each side by $\"\"$ )

$\"\"$ (Simplify)

$\"\"$

Therefore, the value of $\"\"$ is $\"\"$ .

Option A is right choice.

$\"\"$

Option A is right choice.