Hello!
Answer:

Explanation:
→ We want to solve this equation:

◼ Convert the fractions on the same denominator:

◼ Simplify both sides:

◼ Multiply both sides by 30k:

◼ Simplify both sides:

◼ Divide both sides by -12:

◼ Simplify both sides:

Conclusion:
The solution of the equation 8/k = -12/30 is -20.