Set 7: Linear Equations

Choice B is correct. Choice Ahoice D is the correct answer. 1. Subtract x: $3x - 8 = 7$ 2. Add 8: $3x = 15$ 3. Divide by 3: $x = 5$ 4. Verify: $4(5) - 8 = 12$ and $5+ 7 = 12$ ✓ Choice Ahoice B is incorrect because it results from an error in the solution process. Choice Ahoice C is incorrect because it results from an error in the solution process. Choice Ahoice D is incorrect because it results from an error in the solution process.