Let's remember the following:
1) In this case "Less than" means that there is a subtraction.
2) "The product" is the result of a multiplication.
Knowing the above, you know that " the product of 5 and -19" can be expressed as:
![(5)(-19)](https://img.qammunity.org/2023/formulas/mathematics/college/qae518qp0nmu1et1supgvtet52u5uc3bis.png)
Then, "4 less than the product of 5 and -19" can be expressed as:
![(5)(-19)-4](https://img.qammunity.org/2023/formulas/mathematics/college/spvfc1wrckbx5aqu9ayd22p5fqhqk974lo.png)
Giving you the following result:
![(5)(-19)-4=-95-4=-99](https://img.qammunity.org/2023/formulas/mathematics/college/1s1mslz6958n8fn8jp77f9q9tteec5i2bt.png)