Respuesta :

mixter17

Hello!

The answer is: the addition property

Why?

Addition property states that:

if: [tex]a=b[/tex]

Then,

[tex]a+c=b+c[/tex]

So,

Let:

[tex]a=x=4\\b=4\\c=12[/tex]

So,

[tex]x+12=b+12\\4+12=4+12\\16=16[/tex]

Have a nice day!

zainebamir540

Answer:

The property is addition property

Step-by-step explanation:

The addition property of equality tells us that adding the same number to each side of an equation gives us an equivalent equation

For instance

if a−b = c, then a−b+b = c+b, or a=c+b

The same goes to the given problem too  if x=4 then x+12=16

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