Choice Dhoice C is the correct answer. We divide by the coefficient to find $x$.

1. Start with the equation: $16x = 80$
2. Divide both sides by 16: $x = \frac{80}{16}$
3. Simplify: $x = 5$
4. Verify: $16(5) = 80$ ✓

💡 Simplification: You can simplify this by recognizing that $\frac{80}{16} = \frac{80÷16}{16÷16} = \frac{5}{1} = 5$, or that $16 \times 5 = 80$.

Choice Dhoice D is incorrect because this results from subtracting: $80 - 16 = 64$. Subtraction is not the inverse of multiplication.

Choice Dhoice A is incorrect because this comes from adding: $80 + 16 = 96$. Addition doesn't undo multiplication.

Choice Dhoice B is incorrect because this results from multiplying: $80 \times 16 = 1280$. This makes the product even larger instead of isolating $x$.