For this case we have the following equation:
![30-7n = 6 (-6n-5)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/7j9625qca72wuaqp2ja1ei0h8cow7ywbcm.png)
We apply distributive property on the right side of the equation, taking into account that:
![+ * - = -](https://img.qammunity.org/2020/formulas/mathematics/high-school/xk4qa3ktexp4l9yhhbslqi31fm79qsog59.png)
So:
![30-7n = -36n-30](https://img.qammunity.org/2020/formulas/mathematics/middle-school/clvoeqbmbhse6ot8kh79s170pw3imzx6vb.png)
We add 36n to both sides of the equation:
![30-7n + 36n = -30\\30 + 29n = -30](https://img.qammunity.org/2020/formulas/mathematics/middle-school/q4be5abhbl12pdl11h47lb6yry0j05pzup.png)
We subtract 30 from both sides of the equation:
![29n = -30-30](https://img.qammunity.org/2020/formulas/mathematics/middle-school/gimg3ofb6p64fbeqbqm5cr5dvge4ey91pc.png)
Equal signs are added and the same sign is placed.
![29n = -60](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ep2aimcheqduz23e79dfu3pou4j0k4tka1.png)
We divide between 29 on both sides of the equation:
![n = - \frac {60} {29}](https://img.qammunity.org/2020/formulas/mathematics/middle-school/aq3qq4lixsxzrcfhv8njc0r3wo2lhbconm.png)
Thus, the equation has a unique solution.
Answer:
![n = - \frac {60} {29}](https://img.qammunity.org/2020/formulas/mathematics/middle-school/aq3qq4lixsxzrcfhv8njc0r3wo2lhbconm.png)