EXPLANATION:
To correctly solve the exercise we must do the following:
Add the value of the two sodas,and that result must be subtracted from $ 30 to know exactly the value of the pizza.
The exercise is as follows:
[tex]\begin{gathered} The\text{ two soda cost=3+3}=\text{\$}6 \\ \text{Now we must }subtract\text{ }from\text{ the total value;} \\ 30-6=24 \\ Then\text{ the single pizza cost 24} \\ \text{ANSWER:The cost }of\text{ the whole }pizza\text{ is \$24} \end{gathered}[/tex]