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

The expression is $\"\"$

Whether the equation is true or not

$\"\"$

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

$\"\"$ (Add 4 to each side)

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

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

According to Multiplication property of equality: If a = b then $\"\"$

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

$\"\"$ (Cancel common terms)

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

The equation is true.