Hey there!
In order for you to solve this particular equation, you have to do , what we call [tex]PEMDAS[/tex]. This word "[tex]PEMDAS[/tex]" means
In this particular [tex]equation[/tex] you have
Firstly, we have to solve what is in the [tex]parentheses[/tex] which is
[tex](21.69 -[/tex][tex]24.99)[/tex]
Solve that part
[tex]21.69-[/tex] [tex]24.99[/tex] ⇒[tex]-3.3[/tex]
Our equation now becomes; and we move on to our next step, which is [tex]multiplication[/tex]
[tex]\frac{1}{3}[/tex][tex](-3.3)[/tex]
[tex]\frac{1}{3} (-3.3)[/tex] ⇒ [tex]-1.1[/tex]
So, therefore your answer would most likely going to be: [tex]\boxed{-1.1}[/tex]
Note: you necessarily don't have to round your answer because it is around somewhat rounded to the nearest tenth
Good luck on your assignment and enjoy your day!
~[tex]LoveYourselfFirst:)[/tex]