$\"\"$

The equation is $\"\"$ .

According to addition property of equality: $\"\"$ then $\"\"$ .

$\"\"$ (Add 3 to each side)

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

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

$\"\"$ (Add: $\"\"$ ) $\"\"$

The value of $\"\"$ .