$\"\"$

The equation is $\"\"$ .

According to subtraction property of equality: If a = b then a $\"\"$ c = b – c.

$\"\"$ (Subtract 4 from each side)

(Apply commutative property of addition: a + b = b + a)

$\"\"$

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

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

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

According to multiplication property of equality: a = b then $\"\"$ .

$\"\"$ (Multiply each side by 3)

$\"\"$ (Cancel common terms)

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

The value of $\"\"$ .