13) \( -6=\frac{b}{18} \)

To solve the equation \( -6 = \frac{b}{18} \), you can start by isolating \( b \). Multiply both sides by 18 to get \( b = -6 \times 18 \). When you compute that, \( b = -108 \). So, the solution is \( b = -108 \)! Now you've unraveled an equation that seems a bit tricky at first! It's all about finding that balance, much like cooking a perfect soufflé: follow the steps carefully and bam, you've got a winning result!