1. **State the problem:** Solve the equation $$-8 = 3d + 4$$ for the variable $$d$$. 2. **Isolate the term with $$d$$:** Subtract 4 from both sides to move the constant term. $$-8 - 4 = 3d + 4 - 4$$ This simplifies to: $$-12 = 3d$$ 3. **Divide both sides by 3 to solve for $$d$$:** $$\frac{-12}{3} = \frac{3d}{3}$$ Show canceling common factors: $$\frac{-12}{\cancel{3}} = \frac{3d}{\cancel{3}}$$ Simplifies to: $$-4 = d$$ 4. **Final answer:** $$\boxed{\mathbf{d = -4}}$$