Respuesta :

Amphitrite1040

Hey there!

A is partially correct because it is the same thing as [tex]x =[/tex] [tex]|21|[/tex] but it isn't your answer

B is correct because it is showing your original problem with the ADDITIVE INVERSE

C is incorrect because it doesn't have any thing with the particular equation (besides the 21 part)

D. is partially correct because it is showing the additive inverse of the problem

So, now that we got that portion out of the way, we now know our result

Answer: [tex]B.[/tex][tex]21[/tex] [tex]and[/tex] [tex]-21[/tex]

Good luck on your assignment and enjoy your day!

~[tex]LoveYourselfFirst:)[/tex]