Ravi writes down the expression 4k + 9 − 2k + 3. What is the simplified form of this expression?
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Worked Solution
Step 1: Identify like terms — k-terms: 4k and −2k; constant terms: +9 and +3.
Step 2: Simplify the k-terms: 4k − 2k = 2k.
Step 3: Simplify the constants: 9 + 3 = 12.
Final answer: 2k + 12
Correct answer: 2k + 12
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