Keep in mind that "a less than b" means the same as "a substracted from b". Both can be represented algebraically as the following expression:
[tex]b-a[/tex]
Then, the correct algebraic expression for the first phrase, is:
[tex]\begin{gathered} (6\times3)-5 \\ 5\text{ less than the product of 6 and 3} \end{gathered}[/tex]
The rest of the given expressions are correct:
[tex]\begin{gathered} 3\times(6-5) \\ 3\text{ multiplied by the difference of 6 and 5} \end{gathered}[/tex][tex]\begin{gathered} (6\times5)-3 \\ 3\text{ substracted from the product of 6 and 5} \end{gathered}[/tex]
