To solve the equation:

$\frac{\triangle}{5} = \triangle - 12$

Let's follow these steps:

1. Multiply both sides of the equation by 5 to eliminate the fraction:

$\frac{\triangle}{5} \cdot 5 = (\triangle - 12) \cdot 5$ $\triangle = 5\triangle - 60$

2. Subtract $\triangle$ from both sides to get all the $\triangle$ terms on one side:

$\triangle - \triangle = 5\triangle - \triangle - 60$ $0 = 4\triangle - 60$

3. Add 60 to both sides:

$60 = 4\triangle$

4. Divide both sides by 4:

$\triangle = \frac{60}{4}$ $\triangle = 15$

So, $\triangle = 15$.

If you have any questions or need further details, feel free to ask!

Here are 5 questions you can ask next:

1. How do you solve systems of linear equations?
2. What is the process for finding the roots of a quadratic equation?
3. Can you explain the concept of the derivative in calculus?
4. How do you evaluate definite integrals?
5. What are the steps to simplify complex fractions?

Tip: When solving equations involving fractions, multiplying both sides by the denominator can help eliminate the fraction and simplify the equation.