Solve the equation 3x - 7 = 11.
Answer and explanation
Correct answer: C. x = 6
- Step 1: Add 7 to both sides to get 3x = 18. Step 2. Divide both sides by 3 to get x = 6. Answer: x = 6. Why not the others: x = 4 and x = 18 skip a step, and x = 8/3 subtracts 3 instead of adding 7.
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