Solve for x: 3x + 4 = 16.
Answer and explanation
Correct answer: A. 4
- Step 1: Subtract 4 from both sides: 3x = 12. Step 2. Divide both sides by 3: x = 4. Answer: 4. Why not the others: 6.67: this adds 4 instead of subtracting it. 5.33: this ignores the 4. 9: this subtracts the coefficient instead of dividing by it.
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