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NotoriousØSovereign
I think the answers are:

Statement          Reason  
12=13x+5          Given  
7=13x          Subtraction Property of Equality 
21 = x          Multiplication Property of Equality 
x = 21          Symmetric Property of Equality 

By the way, I'm doing the same exam for Geometry as well. There's a lot of proof questions on there which I'm not good at doing for the reasoning part. If you finish the exam before I do, maybe you can message me what the answers are for some of the questions on there so I know if my answers for the questions are incorrect or not. 

Besides that, hope the answer above is correct for you. 

~ ShadowXReaper069

The equation given is the linear equation, hence to solve the equation, simply perform basic mathematical operation and find the value of variable.hence, the obtained value of x is not equal to the given value. Hence, the statement is false.hence, when 12=13.x+5 then, the value of x=21 is not true.

given information:

The equation given in the question is [tex]12=13x+5[/tex]

The value of [tex]x=21[/tex]

As, we know that, when the value of the variable of the equation is substituted in the respective equation the value satisfies the equation. similarly, the value of variable can also be obtained by solving the equation.

The equation given is the linear equation, hence to solve the equation, simply perform basic mathematical operation and find the value of variable.

[tex]13x+5=12\\13x=12-5\\x=7/13\\x=0.538[/tex]

Hence, the obtained value of x is not equal to the given value. Hence, the statement is false.

Hence, when 12=13.x+5 then, the value of x=21 is not true.

For more information visit:

https://brainly.com/question/13738061

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