Question

what is an advantage of using an equation

Answer 1

Hi! I'm not completely sure how to give you the best answer because I don't know what we are comparing the equation to (meaning advantageous in comparison to what?). I'm guessing if that's the only part you asked then that's the question they gave you so I'll do my best. (organized into bullets)

~ By using an equation you are certain to get the correct answer, as long as you don't mess up on the math yourself- it's not guessing. It's a method of 'organized' math in comparison to working something out in your head. (This one feels a bit iffy, but again, weird question)
~ With an equation you can form graphs and tables, which serve greatly when studying your data.
~ You can also use equations in a variety of ways, as the math community has created a ton of equations to serve in the purpose of math. Theorems and such rules. You can solve for certain factors with much more ease. AND FOR PROOFS.
~ You'll need to become comfortable with equations for all the levels of math after the basics, since they basically revolve around them. They are in a sense the language of math if variables and numbers are the letters.

I hope this helped.