hello
to solve this question, we'll need to manipulate or work with multiplication and division rules
let the unknown number be represented by x
[tex]\begin{gathered} \frac{x}{5}=-13 \\ \text{cross multiply both sides to find x} \\ x\times1=5\times-13 \\ x=-65 \end{gathered}[/tex]note, i cross multiplied with 1
whenever you have a whole number i.e an integer, it is assumed mathematically to be divided by 1 e.g 5 = 5/1
