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

The expression is $\"\"$

$\"\"$ (Distributive property: a(b + c) = ab + ac)

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

$\"\"$ (Commutative property: a + b = b + a)

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

According to addition property of equality: if a = b, then a + c = b + c.

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

$\"\"$ (Commutative property: a + b = b + a)

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

$\"\"$ (Additive identity property: $\"\"$ ) $\"\"$

The solution of expression is wrong.