Answer:
[tex]q = - \frac{r}{s} [/tex]
Step-by-step explanation:
1. Divide by s on both sides.
[tex] \frac{r}{s} = \frac{ - qs}{s} [/tex]
Now you have:
[tex] \frac{r}{s} = - q[/tex]
2. Divide by sides by negative 1 to get q by itself.
[tex] - \frac{r}{s} = \frac{ - q}{ - 1} [/tex]
The outcome:
[tex] - \frac{r}{s} = q[/tex]
