We are asked to find the number that makes the equation correct.
To do that we need to solve the left side of the equation
[tex](3\times8)+(4\times8)[/tex]Find the products
[tex]\begin{gathered} (3\times8)=24 \\ (4\times8)=32 \end{gathered}[/tex]Find the sum of the products
[tex]24+32=56[/tex]This means that the number 56 will make the equation correct.
[tex](3\times8)+(4\times8)=56[/tex]