To solve the equation \( \frac{r}{5} - 6 = -1 \), we can follow these steps:
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Add 6 to both sides of the equation: \[ \frac{r}{5} - 6 + 6 = -1 + 6 \] This simplifies to: \[ \frac{r}{5} = 5 \]
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Multiply both sides by 5 to isolate \( r \): \[ r = 5 \times 5 \] This gives: \[ r = 25 \]
Thus, the solution is \( r = 25 \).